Stainless Steel 316 EFW Pipe manufacturers, Suppliers, and Exporters in India

Mcneil Instrument is a renowned manufacturer, supplier, and exporter in India specializing in Stainless Steel 316 EFW Pipes. These pipes are crafted using electric fusion welding, a method where high voltage electricity is applied to the material, heating and melting it seamlessly. The advantage lies in eliminating the need for additional welding materials. Mcneil Instrument ensures the production of EFW pipes ranging from 6 inches to 100 inches in diameter, employing various grades of stainless steel materials.

The A312 Efw Pipe is corrosion resistant to certain chemicals and agents. Therefore it is used in petrochemical industries, textile, food processing and in fertilizer industries as well. The Mill Tolerance For Efw Pipe is the maximum allowable thickness of the pipes in a manufacturing mill. The larger pipes are manufactured in larger mills. The wall thicknesses of Pipe Sch 10s Efw 304/304l SS A312 correlates to the outer diameter of the pipe. There are different schedules in the SS 316 Efw Pipe and the SS 304 Efw Pipe products which can be used for different pressure requirements. Our SS Electric Fusion Welding Steel Pipe are manufactured according to international standards and are tested for quality. These pipes are welded by rolling the plates and welding the seam and then cleaning the weld flash with scarfing blades. Please contact us for further details.

ASTM A312 TP316/ 316L EFW

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

SS EFW Pipe Material Specification

ASME and ASTM designationASTM A312 / ASTM SA312
Available Grades
  • ASTM A312 (TP304/304L, TP316/316L, TP321, TP321H, TP347, TP347H)
  • ASTM A790
  • ASTM A358 (TP304/304L, TP316/316L, TP321, TP321H, TP347, TP347H)
  • ASTM A928 (UNS S31803, UNS S32750, UNS S32760)
Available Forms and TypesHydraulic, Square, Round, Hex, Rectangle, Honed
Manufacturing TypeWelded, 100% X Ray Welded, Fabricated, ERW, CDW
Pipe End Type AbbreviationsBeveled end, Bevel large end, Bevel both ends, Plain One End, Plain Both Ends, Bevel one end, Bevel small end, Treaded On End, Treaded Both Ends, Beveled One End
Types of Technical Delivery ConditionsCold Drawn, Annealed and Pickled, Bright Annealed, Polished
Surface Finish and Coating2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements
Schedule (SCH)SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Offering value-added servicesGrooving, Export Packaging, Material testing, Polishing, Export Documentation, Threading, Machining, Ultrasonic Testing, Customer Tagging/ Marking, Non Destructive, Threading, Beveling, MTR’s Available, Cutting, Destructive, Color Coding

ERW vs Stainless Steel EFW Pipe

ERW full formElectric resistance welding (ERW), View Stainless Steel ERW Pipe for detailed information
EFW full formElectric Fusion Welding (EFW)
Specification of ERW & EFWASME 36.10, ASME 36.19, ASME B16.25, ASME B16.49
ERW & EFW AdvantageCustom size, Greater strength, Greater pressure resistant
ERW & EFW Disadvantage
  • Spiral pipe is difficult to weld
  • It has longer weld & likely to more fail chances
  • Not suitable for pigging operations

Why use X-ray welding for Stainless Steel EFW Pipes?

Mcneil Instrument, a renowned name in the manufacturing of stainless steel and other metallic pipes, employs various techniques for pipe fabrication, including hot rolling, cold drawing, electric resistance welding, and electric fusion welding (EFW). Among these methods, EFW stands out, particularly with the integration of X-ray welding technology.

X-ray welding, a relatively recent advancement in EFW, offers distinct advantages despite requiring specialized conditions and higher room standards. Despite the increased cost, X-ray welding provides precise focus on smaller spots, facilitating faster metal melting. This precision minimizes the affected zone, thereby preserving the mechanical properties of the material. Unlike conventional EFW methods, which may cause slight deformations in the pipes, X-ray welding ensures minimal to no deformation, eliminating the need for additional treatments such as adjustments to wall thickness, absolute roughness, or shape.

Given these benefits, Mcneil Instrument is increasingly adopting X-ray welding for its EFW pipes, ensuring superior quality and efficiency in their products.