Choosing The Best Stainless Steel Pipe In India Their Sizes, Dimensions and Material Use

Choosing The Best Stainless Steel Pipe In India Their Sizes, Dimensions and Material Use

Stainless steel pipes are versatile and durable tubes used in various industries for transporting liquids and gases. They are made from an alloy of steel with chromium, which makes them resistant to corrosion, rust, and staining, even in harsh environments. This unique property makes stainless steel pipes ideal for a wide range of applications, from plumbing to industrial processes.

Properties of Stainless Steel Pipes

Stainless steel pipes have several key properties that make them advantageous:

  • Corrosion Resistance: The chromium content in stainless steel forms a protective oxide layer on the surface, which prevents corrosion and rusting, even when exposed to moisture or chemicals.
  • Strength and Durability: Stainless steel pipes are strong and durable, making them suitable for high-pressure and high-temperature applications. They can withstand extreme conditions without deforming or breaking.
  • Hygienic: Stainless steel is non-porous and easy to clean, making it ideal for applications where hygiene is crucial, such as in food processing or pharmaceutical industries.
  • Aesthetic Appeal: Stainless steel pipes have a sleek and modern appearance, making them suitable for architectural and decorative purposes as well.

Types of Stainless Steel Pipes

There are various types of stainless steel pipes available, each designed for specific applications:

  1. Seamless Pipes: These pipes are manufactured without any welding seam, resulting in a smooth interior surface. Seamless pipes are preferred for applications requiring high-pressure resistance.
  2. Welded Pipes: Welded stainless steel pipes are made by rolling a flat plate and welding the seam. They are cost-effective and suitable for applications where the pipe doesn’t need to withstand high pressures.
  3. ERW Pipes: Electric Resistance Welded (ERW) pipes are made by forming a strip of steel into a cylindrical shape and welding the edges together. They are commonly used in structural and mechanical applications.
  4. LSAW Pipes: Longitudinal Submerged Arc Welded (LSAW) pipes are manufactured by bending and welding steel plates. They are used in oil and gas pipelines and structural applications.

Stainless Steel Pipes Specification, Sizes, and Dimensions

Below is a table showcasing various specifications, sizes, and dimensions of stainless steel pipes commonly used in different applications:

Pipe TypeSpecificationSize Range (Outer Diameter)Wall Thickness RangeLength (Standard)
Seamless PipeASTM A312 / A213 / A2691/8″ – 24″SCH 5S – SCH 16020 feet
Welded PipeASTM A312 / A3581/2″ – 48″SCH 5S – SCH 80S20 feet
ERW PipeASTM A312 / A3581/2″ – 24″SCH 10 – SCH 8020 feet
LSAW PipeASTM A312 / A35816″ – 72″SCH 10 – SCH 80Custom
Stainless Steel TubingASTM A269 / A5541/4″ – 4″ (Fractional Sizes)0.035″ – 0.120″20 feet / Coils
Specialized PipesASTM A312 / A511 / A789Various SizesVarious ThicknessesCustom


  • Specifications such as ASTM A312, A213, A269, A358, A554, etc., denote standards set by ASTM International for stainless steel pipes and tubing.
  • “SCH” stands for Schedule, indicating the wall thickness of the pipe.
  • The length mentioned is the standard length; however, custom lengths are available upon request.
  • Specialized pipes may have varying specifications and dimensions based on specific applications and industry requirements.

This table provides a comprehensive overview of the common types of stainless steel pipes, their specifications, sizes, and dimensions, helping users select the appropriate pipe for their needs.

Applications of Stainless Steel Pipes

Stainless steel pipes find applications in various industries, including:

  1. Construction: Used for plumbing, structural support, and architectural features.
  2. Oil and Gas: Used in pipelines for transporting crude oil, natural gas, and other petroleum products.
  3. Chemical Processing: Suitable for transporting corrosive chemicals and acids safely.
  4. Food and Beverage: Used in food processing plants for conveying liquids and gases without contamination.
  5. Automotive: Utilized in exhaust systems and other automotive components due to their resistance to heat and corrosion.

Tips for Choosing the Best Stainless Steel Pipe

When selecting the best stainless steel pipe for your application, several factors need to be considered to ensure optimal performance and durability. Here are some tips to help you make an informed decision:

  • Identify the Application Requirements: Understand the specific requirements of your application, including the type of fluid or gas being transported, operating temperature and pressure, environmental conditions, and regulatory standards. This will help determine the appropriate grade, size, and type of stainless steel pipe needed.
  • Choose the Right Grade of Stainless Steel: Stainless steel pipes are available in various grades, each offering different properties suited to different applications. Common grades include 304, 316, 321, and 409, among others. Consider factors such as corrosion resistance, strength, and temperature resistance when selecting the grade best suited to your needs.
  • Consider Corrosion Resistance: Corrosion resistance is a critical factor, especially in harsh environments or when conveying corrosive fluids. Choose a stainless steel grade with high corrosion resistance, such as 316 stainless steel, which contains molybdenum for enhanced corrosion resistance in chloride environments.
  • Evaluate Mechanical Properties: Consider the mechanical properties of the stainless steel pipe, including tensile strength, yield strength, and elongation. These properties determine the pipe’s ability to withstand pressure, temperature fluctuations, and mechanical stress without deformation or failure.
  • Select the Appropriate Size and Thickness: Choose the right size and wall thickness of the pipe based on the flow rate, pressure requirements, and space constraints of your application. Consult with a piping engineer or refer to industry standards to determine the optimal size and thickness for your specific needs.
  • Determine the Pipe Type: Consider whether a seamless or welded stainless steel pipe is more suitable for your application. Seamless pipes offer superior strength and corrosion resistance, making them ideal for high-pressure and critical applications. Welded pipes are more cost-effective and suitable for less demanding applications.
  • Verify Compliance with Standards: Ensure that the stainless steel pipe complies with relevant industry standards and specifications, such as ASTM, ASME, or API standards. This ensures product quality, performance, and compatibility with other components in your system.
  • Consult with Experts: If you’re unsure about the best stainless steel pipe for your application, consult with piping engineers, suppliers, or manufacturers who can provide expert advice based on your specific requirements.

By considering these tips and factors, you can choose the best stainless steel pipe that meets your application’s needs for durability, performance, and reliability.

Stainless steel pipes offer a combination of durability, corrosion resistance, and versatility, making them indispensable in numerous industries. Whether for transporting liquids, gases, or structural support, stainless steel pipes provide a reliable and long-lasting solution for various applications.

Stainless Steel Pipe Needs

Stainless steel pipes fulfill a myriad of needs across various industries, owing to their exceptional properties and versatility. In construction, these pipes serve as the backbone for plumbing systems, providing reliable and durable conduits for water supply, sewage disposal, and HVAC systems. The corrosion-resistant nature of stainless steel ensures longevity, making it ideal for both residential and commercial applications where reliability is paramount. Moreover, in the oil and gas sector, stainless steel pipes play a crucial role in transporting crude oil, natural gas, and refined petroleum products over long distances. Their ability to withstand high pressures and extreme temperatures makes them indispensable for ensuring the integrity and efficiency of pipelines.

Beyond conventional applications, stainless steel pipes cater to specialized needs in sectors like pharmaceuticals, food processing, and chemical industries, where hygiene and safety are paramount. These industries rely on stainless steel pipes for their non-reactive properties, ensuring that sensitive substances remain uncontaminated during transport. Additionally, in architectural and decorative applications, stainless steel pipes offer a blend of aesthetic appeal and structural integrity. From sleek handrails to modern façades, stainless steel pipes enhance the visual appeal of buildings while providing robust support. Overall, the diverse needs addressed by stainless steel pipes underscore their importance as indispensable components across numerous industries, contributing to efficiency, safety, and innovation.

Material use for Stainless Steel Pipe Manufacturing

Below is a table outlining the materials commonly used for stainless steel pipe manufacturing:

Materials Used for Stainless Steel Pipe

Materials Used for Stainless Steel Pipe

MaterialDescriptionCommon Grades
Stainless SteelA corrosion-resistant alloy containing iron, chromium, and often nickel or other elements.304, 304L, 316, 316L, 321, 347, etc.
Carbon SteelA steel alloy containing carbon as the main alloying element.A106, A53, API 5L, etc.
Alloy SteelSteel alloyed with other elements such as chromium, nickel, or molybdenum for enhanced properties.P5, P9, P11, P22, etc.
Duplex Stainless SteelA type of stainless steel with a mixed microstructure of austenite and ferrite phases, offering improved strength and corrosion resistance.2205 (UNS S31803), 2507 (UNS S32750), etc.
Nickel AlloysAlloys with high nickel content, offering superior corrosion resistance and high-temperature strength.Alloy 200, Alloy 400, Alloy 600, Alloy 625, Alloy 800, etc.
TitaniumA lightweight and corrosion-resistant metal often used in high-performance applications.Grade 2, Grade 5, Grade 7, etc.
CopperA ductile metal with excellent thermal and electrical conductivity, sometimes used in specialized applications.C70600, C71500, etc.
PVC (Polyvinyl Chloride)A thermoplastic polymer commonly used for low-pressure water and drainage systems.PVC-U, PVC-C, etc.
HDPE (High-Density Polyethylene)A versatile plastic material known for its high strength-to-density ratio and chemical resistance.PE100, PE80, etc.

These materials are chosen based on factors such as the intended application, operating conditions, required properties (e.g., corrosion resistance, strength), and cost considerations.

Why to Choose Mcneil Instrument for your Stainless Steel Pipes Manufacturer, Supplier, and Exporter in India

Mcneil Instrument is one of the leading pipes manufacturers in India, diverse industrial needs with a comprehensive range of good quality stainless steel pipes. With a reputation for excellence and reliability, Mcneil Instrument has established itself as a trusted name in the industry. As one of the foremost pipes manufacturing companies in India, Mcneil Instrument adheres to stringent quality standards and employs advanced manufacturing techniques to produce pipes that meet the highest performance criteria. Whether it’s seamless, welded, or specialized pipes, Mcneil Instrument delivers products that excel in corrosion resistance, mechanical strength, and dimensional accuracy, ensuring optimal performance in various applications.

As one of the premier pipes suppliers in India, Mcneil Instrument extends its reach nationwide, providing seamless access to its top products. With a vast distribution network and a commitment to customer satisfaction, Mcneil Instruments caters to the needs of industries ranging from construction and infrastructure to oil and gas, offering timely delivery and excellent service. Additionally, as prominent pipes exporters in India, Mcneil Instruments serves global markets, showcasing the nation’s manufacturing prowess and quality craftsmanship on an international scale. With a focus on innovation, reliability, and customer-centricity, Mcneil Instrument continues to be a preferred choice for discerning customers seeking superior pipes solutions.

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Difference Between Seamless and Welded Pipe

Pipelines are crucial components within refineries and industrial facilities, facilitating the transportation of various media. The material selection for these pipelines, such as PVC, stainless steel, carbon steel, and alloys like nickel, titanium, copper nickel, Monel, Inconel, and Hastelloy, is carefully considered to balance performance and cost. Mcneil Instrument, a renowned manufacturer, employs judicious material choices in its pipe production. These materials cater to different media transportation needs while ensuring cost-effectiveness. Pipe construction primarily falls into two categories: seamless and welded. Seamless pipes lack seams, resulting in smoother surfaces, while welded pipes feature seamlines due to the joining process.

The primary distinction between the construction of these two pipes lies in the presence of a seamline in a welded configuration. However, there exist other factors that differentiate the constructions, including pressure capacity and price point. Regarding pressure bearing capabilities, seamless pipes exhibit superior ability to withstand higher pressures. On average, they can endure nearly 20% more pressure compared to conventionally welded pipes. This characteristic renders seamless pipes advantageous for applications requiring high pressure handling. Although welded pipes are suitable for high-stress scenarios, their vulnerability to failure increases due to the presence of a weld seam, especially if the heat-affected weld zone is susceptible to intergranular corrosion. The occurrence of pipe bursting at the seamline becomes highly probable if corrosion affects the sensitized grain boundary of the pipe. Such outcomes are undesirable, particularly in industries transporting toxic, bio-hazardous, or flammable materials. Consequently, vendors may opt for seamless pipes as they are not prone to intergranular corrosion, significantly reducing the risk of pipe bursts. This consideration becomes pivotal for Mcneil Instrument when selecting the appropriate pipe type for various industrial applications.

Price Difference Between Seamless and Welded Pipe

Mcneil Instrument distinguishes itself from its competitors in the pipe construction industry through its price differentiation, primarily stemming from the variance in manufacturing processes. Welded pipes, utilizing metal plates, offer a cost-effective production method, resulting in lower pricing. Additionally, the accelerated rate of production contributes to its affordability. Conversely, seamless pipes, drawn through billets, undergo a labor-intensive manufacturing process, prolonging production time and elevating costs. Despite the higher price tag, seamless pipes boast superior pressure capacity and smoother surfaces, reducing the likelihood of corrosion. Mcneil Instrument’s seamless pipes emerge as an effective yet pricier alternative when compared to welded counterparts, amalgamating quality and durability.

The Seamless and Welded Pipe Manufacturing Process

As previously noted, Mcneil Instrument manufactures welded pipes using metallic sheets, with the wall thickness specified by the purchaser. The length of the sheet before welding must be matched to maintain both the inner and outer diameter of the pipe, as provided by the buyer upon ordering. Welding methods must adhere to various standards, with many manufacturers, suppliers, and buyers following ASTM standards as production guidelines.

In the production of seamless pipes, Mcneil Instrument employs heat treatments. Initially, the alloy undergoes heating, followed by molding using a solid billet. This solid billet serves to shape the alloy into cylindrical components. Once formed into cylinders, they are rolled to stretch and create hollows. Throughout this process, the hollow center of the cylinder may be irregularly shaped. To achieve a uniform, hollow center, a bullet-shaped piercer point is inserted through the core of the billet simultaneously with the rolling of the cylinder. Subsequently, the pipes undergo additional machinery processes to straighten them and eliminate deformities, resulting in smoother, more durable seamless pipes.

Seamless and Welded Pipe Application

Mcneil Instrument acknowledges that pipes serve a pivotal role in transporting materials, with their application and end-use dictated by various factors such as cost-effectiveness, durability, compatibility with different media, corrosion resistance, as well as meeting temperature and pressure specifications. Industries ranging from pharmaceuticals, building & construction, food processing, and beverages to nuclear & power generation utilize pipes for material conveyance. However, it’s evident that the petrochemical and natural gas sector stands out as the primary beneficiary, extensively relying on these components for their operations.

Seamless and welded pipe Specification

Specification of Seamless Pipe 

  • Seamless pipes are crafted from solid cylindrical steel billets through a piercing and rolling process.
  • Material: Commonly made from carbon steel, stainless steel, or alloy steel.
  • Size Range: Typically available in a wide range of sizes, from small diameters to large diameters.
  • Wall Thickness: Varied, depending on the application requirements.
  • Strength: Offers high tensile strength and resistance to pressure.
  • Surface Finish: Smooth surface finish, suitable for applications requiring precise fluid flow.
  • Usage: Preferred for high pressure applications, critical industrial processes, and applications requiring corrosion resistance.

Specification of Welded Pipe 

  • Welded pipes are formed by welding or joining steel plates or coils end-to-end to create a cylindrical shape.
  • Material: Can be made from carbon steel, stainless steel, or alloy steel.
  • Size Range: Available in a diverse range of sizes, catering to different industrial needs.
  • Wall Thickness: Can be customized based on application requirements.
  • Strength: Provides strength comparable to seamless pipes, suitable for various applications.
  • Surface Finish: Can have weld seams, which may require additional treatment or finishing.
  • Usage: Suitable for general-purpose applications, structural projects, and situations where cost-effectiveness is a priority.

Mcneil Instrument offers a comprehensive range of seamless and welded pipes, meeting industry standards and tailored to specific client requirements.

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Elevate your industrial projects with Mcneil Instrument’s EIL-approved Pipe manufactured in India

In the realm of industrial equipment, precision and reliability are non-negotiable. Mcneil Instrument stands tall as a leading manufacturer, supplier, and exporter of EIL Approved Pipes, catering to diverse industrial sectors with a comprehensive range of high-quality products. From seamless to welded, rectangular to ERW pipes, our offerings are tailored to meet varied applications across industries, ensuring optimal performance and durability.

Product Range and Versatility:

Mcneil Instrument is a renowned manufacturer of EIL-approved pipes in India. Our product line includes EIL-approved seamless pipes, rectangular pipes, welded pipes, EFW pipes, and ERW pipes. Our pipes, which come in a wide range of sizes, shapes, and specifications, are essential accessories for a variety of industries, including water treatment, desalination, petrochemical, oil and gas, shipbuilding, nuclear power plants, chemical, and fertilizer plants. They are designed to perform exceptionally well in pressurized applications.

EIL Approved Pipe Fittings Specification, Grades, Size & Materials

Size RangeWelded Fittings: 1/2″ – 48″   Seamless Fittings: 1/2″ – 10″
Bending RadiusR=8D, 3D, 10D, 1D, 2D, 5D, 6D or Custom MSS Sp-43
ElbowsAngle : 3D, 4D, 5D, 6D, 1.0D, 1.5D, 2.0D, 2.5D, 7D-40D .
Standard: MSS SP-75 JISB2312 JISB2313, ASME B16.9, 22.5 deg, 30deg, 45 deg, 90 deg, DIN2605 JISB2311 BS, 180 deg, GB, ISO
Specialized manufacturer of90º Elbows, Tee, Stub End, Pipe Cap, Crosses, 45º Elbows, Reducers, Pipe Bend
ThicknessSCH 140, SCH 160, SCH10, SCH30, STD SCH40, SCH20, XS, SCH 80, SCH60, SCH 100, SCH 120, XXS
DimensionsASME/ANSI B16.9, BS4504, ASME B16.28, MSS-SP-43, BS4504, BS1560, BS10
Manufacturing processPress, Forge, Push, Cast, etc.
Stainless steelASTM / ASME SA 182 F 304 , 304L , 304H, 309H, 310H , 316 , 316H , 316L , 316 LN , 317 , 317L , 321 , 321H , 347H .
Duplex steelASTM / ASME SA 815 UNS NO.S 31803 , S 32205 , S 32550 , S 32750 , S 32760.
Carbon steelASTM / ASME A 234 WPB , WPC ASTM / ASME A 860 WPHY 42 , WPHY 46 , WPHY 52 , WPH 60 , WPHY 65 & WPHY 70
Alloy steelASTM / ASME A 234 WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 23, WP 91

Customer-Centric Approach:

Our commitment to customer satisfaction is unwavering, and we strive to exceed expectations in every interaction. Here’s how we ensure a seamless experience for our customers :

– Superior customer service: At Mcneil Instrument, customer service is not just a department; it’s a philosophy. Our dedicated team is committed to providing prompt and personalized assistance to address all customer queries and concerns.

– Uncompromising quality: We uphold the highest standards of quality in our pipe production, using premium materials and employing rigorous quality control measures to ensure flawless products that meet or exceed industry specifications.

– Timely delivery: We understand the importance of timely project completion, which is why we prioritize prompt delivery of our EIL Approved Pipes, ensuring our customers receive their orders precisely when they need them.

– Cost-effective solutions: Despite our unwavering commitment to quality, we offer competitive pricing on all our products, making Mcneil Instrument the preferred choice for cost-conscious industrial projects.

– Continuous improvement: We continually invest in research and development to enhance our products and services, staying ahead of industry trends and technological advancements to better serve our customers.

Customization Options:

Since every project is different, we provide customization options so that our EIL-approved pipes can be precisely tailored to meet your requirements. Our team of professionals will work together with you to produce a customized solution that matches your demands, regardless of whether you require a specific size, material, or coating. You may be confident that our customizable manufacturing process will result in a product that is ideal for your needs.

Additional Highlights:

Stringent specifications: Our EIL Approved Pipes adhere to international standards such as ASTM, ASME, DIN, NFA, and JIS, ensuring compatibility and reliability across diverse applications.

Application versatility: Whether for refineries, power plants, marine applications, offshore oil drilling, fossil fuel power plants, shipbuilding, nuclear power, paper & pulp, gas processing, or seawater equipment, our EIL Approved Carbon Steel Pipes are trusted for their robust performance and longevity.

Comprehensive product range: In addition to our flagship EIL Approved Pipes, we offer a wide range of related products and accessories to meet all your industrial piping needs, providing a one-stop solution for seamless project execution.

Global Reach and Support: 

Although Mcneil Instrument is headquartered in India, our global reach exceeds national boundaries. We are well-known on the global market and export our EIL-approved pipes to customers all over the globe. No matter where you are, our committed staff of customer service and sales experts is here to help you at every stage, from product selection to post-purchase assistance, guaranteeing a flawless experience.


Mcneil Instrument is dedicated to environmental responsibility and sustainability as a responsible manufacturer. In our production operations, we place a high priority on environmentally friendly measures like cutting waste, using less energy, and obtaining materials from sources that practice sustainability. You can be sure that when you choose pipes from Mcneil Instrument that have received EIL approval, you’re not only investing in high-quality goods but also in environmentally friendly manufacturing processes.

Conclusion : 

Mcneil Instrument is your trusted partner for high-quality EIL Approved Pipes, backed by a customer-centric approach, uncompromising quality, and unmatched expertise. Partner with us for your next industrial project and experience excellence at every step of the way.

#pipes #approvedpipes #EILapprovedpipes #pipemanufacturer #pipesupplier #pipeexporter

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Manufacturing Process of Stainless Steel Pipe - mcneil Instruments Inc.

Manufacturing Process of Stainless Steel Pipe

Steel pipes are lengthy, hollow tubes with a multitude of uses. They are made using two different processes that yield seamless or welded pipes. Raw steel is initially cast into a more manageable initial form in both techniques. The steel is then stretched into a seamless tube or the edges are forced together and sealed with a weld to form a pipe. Early in the 19th century, the initial techniques for making steel pipe were created, and they gradually developed into the contemporary procedures we employ today. Millions of tonnes of steel pipe are produced annually. Because of its adaptability, it is the steel industry’s most widely utilized product.

There are many different locations for steel pipes. Because of their strength, they are utilised underground to move gas and water between towns and cities. They are also used in construction as a way to safeguard electrical cables. Steel pipes can be lightweight even though they are powerful. They are therefore ideal for use in the production of bicycle frames. They are also useful in, among other places, cars, street lamps, flagpoles, refrigeration units, heating and plumbing systems, and medications.

Raw Materials Using for Pies Manufacturing

Steel is the main raw material used in the manufacture of pipes. The main component of steel is iron. The alloy may also contain other metals such as manganese, aluminium, titanium, tungsten, vanadium, and zirconium. Occasionally, finishing materials are utilised in the production process.

if the pipe is coated, used. At the final stage of the production line, steel pipes are usually coated with a little amount of oil. In doing so, the pipe is more protected. A production stage involves the use of sulfuric acid to clean the pipe, even though it is not a component of the final product.

Design & Diameter of Pipes

Steel pipe comes in two varieties: seamless and with a single welded seam running the length of it. Each has a distinct purpose. The walls of seamless tubes are usually thinner and they weigh less. They are employed in the transportation of liquids and bicycles. Sealed tubes have greater rigidity and weight. They are usually straighter and more consistent. They are employed in plumbing, electrical conduit, and gas transportation, among other things. They are usually employed in situations when there is little pressure placed on the pipe.

During manufacture, several pipe qualities can be adjusted. For instance, the pipe’s diameter is frequently altered based on its intended application.  Small pipes used to create hypodermic needles and big pipelines needed to move gas throughout a metropolis can both have different diameters. It is also possible to regulate the pipe’s wall thickness. Often, the strength and flexibility of pipes will also depend on the type of steel used. Additional modifiable attributes encompass dimensions, type of coating, and final polish.

Maine Process of Pipes Manufacturing

There are two distinct methods used to create steel pipes. There are three steps in the entire production method for both processes. First, a more workable structure is manufactured from raw steel. After that, a continuous or semi continuous production line is used to create the pipe. In order to satisfy the needs of the customer, the pipe is finally chopped and altered.

Manufacturing of ingots (Metal Bar, Plate, or Sheets)

Iron ore and coke, a carbon-rich material produced when coal is burned without air, are melted together in a furnace to create molten steel. The carbon is then mostly removed from the liquid by introducing a high oxygen content. After that, the molten steel is poured into sizable iron mould with thick walls, where it cools to form ingots.

Ingots are formed between massive rollers under extreme pressure to create long items like bars and rods or flat products like plates and sheets.

Manufacturing slabs and blooms

The ingot is run through two stacked steel rollers with grooves to create a bloom. We refer to these kinds of rollers as “two-high mills.” Three rollers are used occasionally. The rollers move in opposing directions and are placed such that their grooves meet. The steel is compressed and stretched into longer, thinner pieces as a result of this motion. The steel is drawn back through, becoming longer and thinner, when the rollers are turned by hand. Until the steel takes on the required shape, this process is repeated. In order to process the steel evenly on both sides, devices known as manipulators flip the material.

Another method that can be used to roll ingots into slabs is related to the bloom-making process. The steel is stretched by passing it between two stacked rollers. To regulate the slabs’ breadth, there are additional rollers affixed to the side. The uneven ends of the slabs or blooms are chopped off and the steel is cut into shorter pieces once it takes on the required shape.

Additional processing

Before being turned into pipes, blooms are usually subjected to additional processing. By passing them through more rolling mechanisms that lengthen and narrow them, blooms are transformed into billets. The flying shears are the tools used to cut the billets. These are two synchronized shears that cut the moving billet by racing against it. This enables effective cutbacks to be made without pausing the production process. After stacking, these billets will produce seamless pipe.

Rework is also done on slabs. They are first heated to 2,200° F (1,204° C) to make them pliable. As a result, the slab’s surface develops an oxide layer. Using a scale breaker and high pressure water spray, this covering is removed. The slabs are subsequently turned into thin, narrow steel strips known as skelp by running them through a series of rollers on a heated mill. This mill has a maximum length of 0.5 miles. The slabs get longer and thinner as they go through the rollers. A single slab of steel may be transformed from a 6 in (15.2 cm) thick piece of material into a thin steel ribbon that can be as long as a quarter mile in roughly three minutes.

The steel is pickled after stretching. In order to clean the metal, it must pass through a number of sulfuric acid-filled tanks. After that, it is dried, rinsed in both hot and cold water, wrapped up on big spools, and packaged for shipping to a pipe manufacturing factory.

Manufacturing of Stainless Steel Pipes

Pipes are made from billets and skelp. Welded pipe is created from skelp. First, it is set up on an unwinding device. The steel spool becomes hot as it is unwound. After that, the steel is run through several rollers with grooves. The skelp’s edges curl together as it goes by due to the rollers. This results in an unsealed pipe.

Next, welding electrodes are placed over the steel. These fittings bind the pipe’s two ends together. After that, a high pressure roller is used on the welded seam to help ensure a tight weld.  The pipe is then stacked for additional processing after being cut to the required length. The continuous method of welding steel pipe can produce it at a rate of up to 1,100 feet (335.3 metres) per minute, depending on its size.

Square billets are produced when seamless pipe is required. They are formed into what is known as a round or cylinder shape by heating and molding. The circular is then exposed to extreme heat in a furnace. The hot round is then vigorously rolled. A hole forms in the middle of the billet as a result of the high pressure rolling. A bullet-shaped piercer tip is forced through the middle of the billet during rolling because of the irregular shape of this hole. The pipe may continue to have inconsistent thickness and shape after the piercing stage. It goes through an additional set of rolling mills to fix this.

The final stage of processing

Both kinds of pipes can go through a straightening machine once they are manufactured. In order to link two or more pieces of pipe, they may also be equipped with joints. Threading, which consists of tight grooves carved into the pipe’s end, is the most popular kind of junction for pipes with smaller diameters. Additionally, the pipes pass via a measuring device. The pipe has this information automatically painted on it along with other quality control data. Next, a thin layer of protective oil is sprayed onto the pipe. The majority of pipe is usually treated to stop corrosion. This is accomplished by galvanizing it, or applying a zinc coating. Other paints or coatings may be used, depending on how the pipe will be utilized.

Quality Control

Numerous steps are taken to guarantee that the final steel pipe satisfies requirements. For instance, steel thickness is controlled using x-ray gauges. Two x-rays are used for the gauges to function. A single beam of light is aimed toward a known thickness of steel. The other is aimed at the steel that is moving along the production line. The gauge will automatically cause the rollers to resize in order to make up for any differences between the two rays.

After the operation is complete, pipes are examined for flaws as well. Using a specialized machine is one way to test a pipe. This apparatus inserts water into the pipe and then raises the pressure to test the pipe’s capacity. Pipes that are broken are sent back for scrap.


In conclusion, steel pipes are versatile and widely used in various industries due to their strength and adaptability. They are made using different processes and are utilized for transporting gas and water underground, protecting electrical cables, manufacturing bicycle frames, and in various other applications. Steel is the main raw material used in their production, and they are often coated with oil for added protection. Mcneil Instruments Inc is one of the Best Stainless Steel Pipes manufacturer in India.

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Different Types and Uses of Stainless Steel Pipes - mcneil Instruments Inc.

Different Types and Uses of Stainless Steel Pipes

Stainless steel pipes are used to transport gas, hot and cold water, and other fluids in a safe manner. Small pipes have a welded joint in the middle of the length that you can’t see. Bigger pipes have either a welded joint or a riveted joint. Once such pipes have been manufactured, they are soaked in zinc solution. This process is referred to as Galvanizing, and is employed to prevent rusting of the pipe. The average lifespan of such pipes ranges from 25 to 50 years.

These pipes are lightweight and welded joints are used. They are installed on Open Supports and are also joined with Flanged Joints. These pipes are prone to bending and can be easily damaged by acids and alkali water. Repairing these types of pipes is challenging. Because of their lower wall thickness, these pipes are susceptible to external pressure.

There are five different types of stainless steel Pipes

Stainless steel is used in a variety of piping applications. Stainless steel is second only to carbon steel in Process industries due to its superior corrosion resistance characteristics. Stainless steel is an alloy steel with a chromium content of at least 10.5% and a carbon content of at least 1.20%.

SS is super corrosion-resistant and super easy to work with. It’s made by coating the surface of stainless steel with a non-reactive film of chromium oxide called Cr2O3. This film sticks to the metal and stops it from corroding. When the microstructure of Stainless Steel changed, its properties changed as well. Based on these changes, Stainless Steel can be categorized as follows;

1. Austenitic stainless steel

Stainless steels are made with a lot of different metals like chromium, nickel, manganese, and nitrogen, which are added to the iron base to give them their unique look.

AusteniticStainless steel has some really great qualities. Here’s a list of some of them.

  • Austenitic Stainless steel is magnetic-free and highly corrosion-resistant.

It doesn’t attract magnets and is immune to rust and corrosion due to exposure to moisture, chemicals and acids.

  • Excellent weldability, Formability, Fabricability & Ductility

Austenitic Stainless steel is known for its high weldability, which means it’s easy to join or weld onto other materials. It’s also really versatile, meaning you can shape and bend it into all sorts of different shapes without it losing its shape.

  • High Corrosion Resistance at 1500°F High corrosion resistance at 1500°F

It’s a special kind of stainless steel that won’t corrode at high temperatures, so it’s great for use in places where temperatures are high, like industrial furnaces or processing plants.

  • Austenitic Stainless Steel is suitable for both low and high temperature service.

Austenitic Stainless steel has excellent mechanical properties over a broad temperature range, allowing it to be used in both low and high temperature applications.

  • This form of stainless steel is resistant to corrosion through cold working.

Cold working processes, including rolling, bending, and hammering, can cause plastic deformation in Austrian stainless steel, thus increasing its strength and hardness and improving its mechanical properties.

  • The FCC is a cubic structure that is centered around the face.

Austenitic Stainless steel has a special structure called face-centered cubic, which means the atoms are all in one place. This helps it to be strong, ductile, and tough.

  • This Pipes has a lot of power when it comes to dealing with cold temperatures.

Stainless steel can withstand even the coldest conditions, which is great for cold conditions or when it’s exposed to sudden shocks or loads. It’s used a lot in process industries and in industrial settings, and even cookware is made from austenite stainless steel.

Stainless steel is one of the most corrosion-resistant, weldable, and formable materials on the market. It’s used in a lot of different industries, like chemical, oil, gas, food, beverage, pharmaceutical, and many more. It’s also a popular choice for cookware because of its good hygiene, ability to resist corrosion, and great looks.

Types of stainless steel that can be used include Type 304, Type 304L, Type 316, and Type 316L. These types of stainless steel are used in a lot of different industries and have different compositions and properties depending on what they’re used for. Check out the graph below to see what types of stainless steel you can use.

2. Ferritic stainless steel

Ferritic stainless steel is a more cost-effective and corrosion-resistant steel than galvanized steel. Ferritic stainless steel has a magnetic nature and high carbon content, which can cause it to be brittle and not as corrosion-resistant as austenitic stainless. Carbon can cause carbides to form, which makes it harder for the material to resist corrosion and more likely to crack and break.

  • Ferritic Stainless Steel is not capable of being hardened by heat treatment.

Ferritic stainless steel isn’t as easy to harden as other stainless steel types because its microstructure doesn’t change much when it’s heated and cooled, so it’s not as easy to improve its mechanical properties with heat treatment.

  • Body-centered cubic (BCC) structure:

Ferritic stainless steel is made with a structure called body-centered cubic, which means all the atoms are in a lattice, with one atom in the middle of each one. This has a negative effect on the material, making it more fragile and less ductile than regular stainless steel.

  • High resistance to chloride stress corrosion cracking exists in ferritic stainless steel.

Ferritic stainless steel has a strong resistance to chloride stress corrosion cracking, which is a major benefit. This kind of corrosion manifests itself in chloride-rich settings, such as those that are marine or include chemical chlorides.

Ferritic stainless steel is frequently utilized in applications including naval equipment, petrochemical facilities, heat exchangers, and furnaces because of its resistance to this particular type of corrosion.

Ferritic stainless steel comes in types 409, 430, 439, 444, and 446. See the graph provided below.

3. Martensitic stainless steel

Martensitic stainless steel is an alloy of stainless steel that has a crystalline structure called martensitic. It can be aged and treated with heat to harden and soften it. One of the toughest forms of stainless steel now available, martensitic stainless steel is well known for its exceptional hardness. However, compared to austenitic stainless steel, it often exhibits inferior corrosion resistance.

  • High degrees of hardness are heat treatable:

Martensitic Stainless steel can be treated with heat to make it really tough, which is called quenching or tempering. Steel is heated up quickly to harden it and then cooled down again to make it softer. This process gives you more control over how hard the steel is and how tough it is.

  • Structure with altered crystallographic shape

When heat treatment is done on Martensitic stainless steel, the crystallographic structure changes from face-cantered to body-cantered. This causes the lattice structure to be distorted, which makes the material stronger and harder.

  • Uses of Manufacturing sports knives and multipurpose tools.

Stainless steel is a popular choice for sports knives, multipurpose tools, and more because it’s so tough and durable. It’s great for keeping your knife sharp and cutting, and it’s also tough enough to handle tough jobs.

Stainless steel isn’t great for things that need to be super resistant to corrosion or in harsh conditions, like knives and cutting tools. But it’s strong and tough, so it’s great for use in places where wear and tear is more important, like industrial applications. Check out the graph below to see examples of Type 405, Type 410, and Type 420.

4. Precipitation Hardening (PH) stainless steel

Precipitation Hardening Stainless Steels with are a type of alloys that resist corrosion. Some of them can be heated up to give you tensile strength of 850 MPa to 1700 MPa and yield strength of 520 MPa to over 1500 MPa.

Precipitation-hardened stainless steel, or PH stainless steel, is a special kind of stainless steel that has a special set of qualities.

  • Precipitation-hardened stainless steel can be heat-treated to a high strength and is magnetic:

PH stainless steel is usually magnetized because of its martensitic composition. It can also be heat treated to reach high tensile strength levels through precipitation hardening. Heat treatment is a process that causes fine particles to be precipitated into the steel matrix, making it stronger and harder.

  • Strong corrosion resistance and a very high strength-to-weight ratio:

Precipitated hardened stainless steel is super strong and lightweight, so it’s great for applications where you need to reduce weight without losing strength. Plus, it’s corrosion resistant, which is something you’d expect from stainless steel. It might not be as tough as austenitic steels, but it’s still pretty good.

  • It’s used to make parts and springs for planes.

The combination of high tensile strength, corrosion resistance, and low weight make precipitation hardened stainless steel an ideal material for aerospace applications.

Stainless steel is a popular material for making a lot of different parts of planes, landing gear, engines, and fastenings. It’s really strong, so it’s great for use in springs that need to be strong and resistant to corrosion. Popular examples of this type of steel are 17-7H and 17-4H.

5. Duplex or Super Duplex stainless steel

Duplex or Super Duplex stainless steels are built on a 25% chromium alloying addition, whereas duplex stainless steels are built on a 22% chromium alloying addition.

A well-balanced blend of austenite and ferrite phases defines the microstructure of Duplex and Super Duplex stainless steel. Austenitic and ferritic stainless steels’ respective characteristics are combined in this dual-phase structure.

  • Benefits of austenite and ferrite stainless steel are combined in this grade:

Stainless steel made from both ferrite and austenite phases has some great benefits. It’s stronger and more resistant to corrosion than ferrite steel, and it’s also more durable and formable than austenite steel. This means it’s better for a lot of different uses.

  • Excellent resistance to pitting and crevice corrosion

Crevice corrosion is a type of corrosion that can occur in confined areas or in crevices, where corrosive solutions have the potential to accumulate. Durable stainless steel, such as Duplex or Super Duplex, has a dual phase microstructure, which increases its resistance to these types of corrosion and makes it suitable for use in harsh conditions, such as in seawater.

  • High resistance to stress corrosion cracking and high strength:

Stainless steel made from Duplex or Super Duplex has a lot of strength, so it’s great for building materials that need to be strong. Plus, it’s really tough when it comes to corrosion, since it can handle a lot of stress and corrosion. That’s especially important when you’re working in tough places like oil and gas drilling.

  • Used in heat exchangers, structural applications, and the seawater system:

Duplex and Super Duplex stainless steel are widely utilized in a variety of industries because of their higher corrosion resistance, strength, and resistance to stress corrosion cracking.

Stainless steel is used in a lot of different types of marine applications, from offshore platforms to desalinated plants. It’s strong and corrosion-resistant, so it’s great for heat exchancers, structural parts, and other tough jobs in the oil and gas industry, chemical production, pulp and paper, and more. Examples of stainless steel made from Duplex or Super Duplex include EX-UNS (S32205), SEC (S31803), and SEC (S32760).

The ASTM Materials Grades for stainless steel are the most commonly used.

No.GradesCommon Use
1ASTM A999Alloy and stainless steel pipe general requirements
2ASTM A954Pipe that is seamless and welded out of austenitic chrome-nickel-silicon alloy
3ASTM A949Ferritic/Austenitic Seamless Spray-Formed Stainless Steel Pipe
4ASTM A943Austenitic Seamless Spray-Formed Stainless Steel Pipe
5ASTM A928Electric Fusion Welded Ferritic/Austenitic (Duplex) Stainless Steel Pipe with Filler Metal
6ASTM A872Ferritic/Austenitic Stainless Steel Pipe Centrifugally Cast for Corrosive Environments
7ASTM A814Cold-worked austenitic stainless steel pipe with welding
8ASTM A813Austenitic stainless steel pipe that has been single- or double-welded
9ASTM A790Ferritic/Austenitic Seamless and Welded Stainless Steel Pipe
10ASTM A451Austenitic steel pipe centrifugally cast for high-temperature service
11ASTM A409For Corrosive or High-Temperature Service, Welded Large Diameter Austenitic Steel Pipe
12ASTM A376For use in high-temperature central station service, seamless austenitic steel pipe
13ASTM A358Austenitic chrome-nickel alloy steel pipe for high-temperature &, welded by electric fusion
14ASTM A312Austenitic stainless steel pipes that have been heavily cold worked, seamless, and welded


Mcneil Instruments Inc. stands as a prominent manufacturer, exporter, and supplier of Stainless Steel Pipes, making it a vital player in the global stainless steel industry. Their dedication to quality, precision, and innovation ensures that their stainless steel pipes find versatile applications across various industries. With a commitment to excellence and a reputation for delivering top-notch products, Mcneil Instruments Inc. continues to be a trusted partner for those seeking reliable stainless steel solutions. Whether used in construction, manufacturing, or other applications, McNeil Instruments Inc.’s Stainless Steel Pipes exemplify the company’s unwavering commitment to meeting the diverse needs of its customers while maintaining the highest standards of quality.

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Pipes Manufacturers, Suppliers, and Exporters in India - Mcneil instrument

The Strength and Quality of Stainless Steel Pipes: Unveiling the Superiority

Stainless steel pipes are renowned for their exceptional strength, durability, and corrosion resistance, making them an ideal choice for a wide range of industrial applications. In this blog, we will delve into the strong qualities of stainless steel pipes, explore the offerings by Mcneil Instruments Inc., a leading stainless steel pipe manufacturer, supplier, and exporter in India, and shed light on the significance of seamless and duplex stainless steel pipes in industrial use.

1. Unparalleled Strength and Durability:

Stainless steel pipes are known for their unparalleled strength and durability. The inherent properties of stainless steel, such as high tensile strength and resistance to impact, make these pipes capable of withstanding extreme conditions and heavy loads. They provide long-lasting performance, reducing the need for frequent replacements and maintenance.

2. Corrosion Resistance:

One of the standout features of stainless steel pipes is their remarkable resistance to corrosion. The presence of chromium in stainless steel forms a protective oxide layer on the surface, which acts as a shield against corrosive elements, including moisture, chemicals, and harsh environments. This corrosion resistance ensures the integrity and longevity of the pipes, making them suitable for various industrial applications.

3. Mcneil Instruments Inc.: Leading Stainless Steel Pipe Manufacturers in India:

Mcneil Instruments Inc. is a trusted name in the industry, renowned for its high-quality stainless steel pipes in India. With their commitment to excellence and adherence to stringent quality standards, they offer a wide range of stainless steel pipes that cater to diverse industrial needs. Mcneil Instruments Inc. takes pride in its state-of-the-art manufacturing facilities, skilled workforce, and cutting-edge technology, ensuring superior products for its customers.

4. Seamless Stainless Steel Pipes:

Seamless stainless steel pipes are manufactured without any welds or joints. This seamless construction offers numerous advantages, including enhanced strength, improved flow characteristics, and reduced risk of leakage. Seamless pipes are highly preferred in critical applications where reliability, efficiency, and uninterrupted flow are paramount.

5. Duplex Stainless Steel Pipes:

Duplex stainless steel pipes possess a unique combination of strength and corrosion resistance. They are composed of a mixed microstructure of austenite and ferrite, providing exceptional mechanical and corrosion properties. Duplex stainless steel pipes are highly resistant to stress corrosion cracking, making them suitable for demanding industrial environments.

6. Wide Industrial Applications:

Stainless steel pipes find extensive use across various industrial sectors. They are employed in industries such as oil and gas, chemical processing, pharmaceuticals, food and beverage, water treatment, and construction. These pipes are utilized for fluid transportation, structural support, heat exchangers, process piping, and more, owing to their strength, durability, and corrosion resistance.


Stainless steel pipes exhibit superior strength, durability, and corrosion resistance, making them an indispensable component in numerous industrial applications. Mcneil Instruments Inc., a leading stainless steel pipe manufacturer in India, offers a wide range of high-quality seamless and duplex stainless steel pipes. With their unwavering commitment to quality, Mcneil Instruments Inc. ensures reliable and durable solutions for industrial use. Embrace the strength and longevity of stainless steel pipes and elevate your industrial processes to new heights.

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Exploring the Dynamic Network of Pipes Exporters, Manufacturers and Suppliers in India

As the demand for pipes have been increasing day by day, so have the number of pipe exporters, manufacturers, and suppliers. India is one of the major exporters and suppliers of pipes in the world.

India offers a dynamic network of pipe exporters, manufacturers, and suppliers that are highly reliable and have earned a reputation for providing top-quality products that meet the international standards. From the smallest of pipes for a residential home to the larger more complex pipes for large-scale industrial projects, the Indian pipe manufacturers have something for everyone.

These pipe manufacturers and suppliers are well aware of the changing trends in the industry, and they keep themselves in pace with the latest developments. They have put in place systems that ensure their products and services are up to the mark. Many export-oriented companies have also been competing in the market to meet the needs of the global customers and offer them the best at the most competitive price.

These companies not only offer quality products but also provide customization services. This means that customers can avail of pipes as per their specific requirements. Moreover, they also ensure timely delivery of the products. Apart from pipes, Indian pipe manufacturers also offer a range of other products such as tanks, valves, and fittings. They use various raw materials to fabricate these components and meet the stringent international standards. A wide range of products ensures that customers get exactly what they need for their projects.

India is quickly becoming a global leader in the fabrication of pipes; offering a broad range of products across a range of industries, from construction and automotive to petrochemical and marine. Customers rely on the machinery, tools, and processes of these manufacturers and suppliers to create precisely crafted pipes that meet the most demanding international standards.

Purchasers in India have access to several different types of pipes, from mild steel to copper, galvanized steel to plastic—each accompanied by its own set of advantages. A range of sizes, shapes, wall thicknesses, metals, and finishes are available to meet the requirements of any project or application. To ensure quality is never sacrificed, India’s pipe manufacturers use the latest technology, superior raw materials, and rigorous testing standards to ensure their products meet international quality standards. State-of-the-art equipment is employed to create precisely cut, milled, and drilled pipes that are strong, durable and consistent in quality. Measuring and testing is integral to their production process and ensures the highest standards in quality, safety and performance.

India’s manufacturers and suppliers are dedicated to providing customers with personalized, tailored solutions to meet the challenging needs of their projects. Specialized services such as cut-to-length, drilling, and threading are available to meet the exact requirements of customers with speed and accuracy.

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