ASTM A312 TP347H Stainless Steel Pipe Manufacturer, Suppliers, and Exporters in India

Mcneil Instrument is a leading manufacturer, supplier, and exporter of Stainless Steel 347H Seamless Pipe and ASME SA 312 TP 347H Welded Pipe in India. ASTM A312 Gr Tp347h, produced by Mcneil Instrument, is an austenitic stainless steel known for its corrosion resistant properties due to its chromium and nickel content. The SS 347H Seamless Pipe material boasts higher carbon content for added toughness, although it may be slightly less strong compared to its low-carbon counterpart. To address this, columbium is incorporated into the A312 Tp347h material.

This alloy composition renders the material highly resistant to oxidizing agents, making it suitable for applications operating at high temperatures with a high risk of oxidization. Despite its high carbon content, the SA 312 Tp 347h material exhibits excellent resistance to intergranular corrosion. The cold-drawn nature of SS 347H Seamless Pipe material precludes hardening via heat treatment, but it can be hardened through cold working. Moreover, the material is readily weldable, offering versatility in various applications.

A Closer Look at Uns s34709 Grade 347h Square Pipe

Mcneil Instrument is a prominent manufacturer, supplier, and exporter offering various shapes of pipes, including SS 347H Square Pipe, Stainless Steel 347H Seamless Pipe, and TP347H Stainless Steel Pipe, suitable for structural applications due to their enhanced strength. Our inventory includes 347H Welded Pipe in diverse shapes to cater to different needs. Among these, the Grade 347H Stainless Steel Round Pipe is widely utilized in heat exchangers, water filtration, aerospace, boat rails, and various other industrial applications. Notably, the AISI 347H Annealed Stainless Steel Welded Pipe exhibits superior strength and durability. All our products adhere to international standards and undergo rigorous quality testing. Feel free to reach out to us with your inquiries.

TP347H Stainless Steel Pipe Sizes Available

TP347H Stainless Steel Seamless Pipes

Sizes: 6NB – 1200NB
Outside Dia.: 1/8″ – 12″ NPS
Thickness : 0.6 – 12.7 mm
Length: Single, Double Random & Cut Length

TP347H Stainless Steel Erw / Welded Pipes

Sizes: 1/8” – 36” NB, 1/4” – 36” OD
Outside Dia.: 6.35 – 114.3 mm
Thickness : 0.8 – 12.7 mm
Length: up to 26 Meters

ASTM A312 TP47H Specification Chart

Available Forms and TypesSquare, Hex, Round, Rectangle, Hydraulic, Honed
Frequently UsedFabricated, 100% X Ray Welded, ERW, Seamless, CDW, Welded
Pipe End FinishBeveled End, Plain End, Treaded
Delivery ConditionCold Drawn, Polished, Bright Annealed, Annealed and Pickled
Surface Coating and Finish2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Pipe Wall ThicknessSCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Industrial Value Added ServicesExport Packaging, Threading, Threading, Non Beveling, Customer Tagging/ Marking, Destructive, Grooving, Export Documentation, Ultrasonic Testing, Machining, Cutting, Destructive, MTR’s Available, Material testing, Color Coding, Polishing
Marking on AISI 347H Pipes
  1. Specification
  2. Grade
  3. Nominal Pipe Sizes
  4. Pipe Schedule or Wall Thickness
  5. Manufacturing Method (Seamless / Welded)
  6. Heat Number
  7. Manufacturer’s Name or Custom Logo – on request

Marked Pipe Sample: ANSI B36.19 ASTM A312 TP347H 12″ NB SCH 40S SEAMLESS HEAT NO. XXXX

Why Is 347H SS Used for Chemical Processing?

Mcneil Instrument utilizes grade 347 stainless steel or SS 347H Seamless Pipe for chemical processing due to its specific properties tailored for such demanding environments. Grade 347, a modified version of 304 stainless steel, is designed for intermittent exposure to temperatures exceeding 800 degrees Celsius. It shares similarities with grade 321 in some mechanical aspects but incorporates columbium in its composition, enhancing its corrosion resistance to most corrosive media under medium to high temperatures.

With a minimum yield strength of 205MPa and a minimum tensile strength of 515MPa, grade 347 stainless steel can withstand high pressures at temperatures above 850 degrees Celsius, crucial for the rigorous conditions encountered in chemical processing. Moreover, its superior elongation and high hardness contribute to its durability and reliability in such environments.

Unlike its counterpart SS 347H Seamless Pipe, which is prone to intergranular corrosion above 850°F, grade 347 stainless steel features higher carbon content and enhanced heat resistance, enabling it to perform consistently within this temperature range.

The combination of its pressure containment capabilities, strength, hardness, heat resistance, and corrosion resistance makes grade 347 stainless steel an ideal choice for chemical processing applications. Additionally, these properties render it suitable for various other high-corrosion, high-heat environments, including boiler tubes and casings, radiant superheaters, heat exchanger tubes, and aircraft exhaust stacks. Within Mcneil Instrument, this material serves as a cornerstone for ensuring the integrity and longevity of critical components essential for efficient and reliable chemical processing operations.

As a leading ASTM A312 TP347H Stainless Steel Pipe Manufacturer, ASTM A312 TP347H Stainless Steel Pipe Supplier, ASTM A312 TP347H Stainless Steel Pipe Exporter in India provide a best quality of TP347H Stainless Steel Pipe or ASME SA 312 TP 347H Welded Pipe in India.

ASTM A312 347H Stainless Steel Pipe Price

Stainless Steel 347H Pipe for sale

ASTM A312 TP347H Exhaust PipeTP 347H Stainless Steel DIN 1.4961 Electropolished Pipe
A312 TP347H Schedule 40 PipeASTM A312 SS 347H Threaded Pipe
SA 312 TP 347H 3 Inch PipeAustenitic Stainless Steel 347H Water Pipe
A312 GR TP347H Square Pipe PriceSS UNS S34709 Seamless Pipe
A312 TP 347H Round PipeStainless Steel UNS S34709 Hollow Pipe
TP 347H Stainless Steel Box Pipewerkstoff nr. 1.4961 Stainless Steel 347H Schedule 80 Pipe
SA312 347H Stainless Steel Polished PipeASTM A312 GR TP347H Schedule 10 Pipe
ASTM A312 GR TP347H Dairy PipeA312 Stainless Steel 347H Rectangular Pipe
A312 Stainless Steel 347H Erw PipeASTM A 312 TP 347H Stainless Steel C Class Pipe

ASTM A312 TP347H Mechanical Behaviour

SUSTensile Strength minimum (MPa) Yield Strength 0.2% Proof minimum (MPa) Elongation minimum (% in 50mm)Hardness
Rockwell B (HR B) maximumBrinell (HB) maximum

A312 TP347H Composition Table

TP 347Hmin.9.000.0417.03.00

ASTM A312 TP347H Pipe Material Equivalent


Contact to Mcneil Instruments, a reputable name in the industry, delivers precision-engineered ASTM A312 TP347H stainless steel pipes, catering to diverse industrial requirements. As a leading manufacturer, supplier, and exporter based in India, Mcneil Instruments ensures good quality and reliability in every ASTM A312 TP347H stainless steel pipe produced. With a comprehensive range including stainless steel 347H seamless pipes and ASME SA 312 TP 347H welded pipes, Mcneil Instruments guarantees exceptional performance and longevity, meeting stringent standards for seamless operation in various applications. Trust Mcneil Instruments for superior quality, prompt delivery, and unmatched customer satisfaction in the realm of stainless steel piping solutions.