Stainless Steel EFW Pipe

Stainless Steel 316 EFW Pipe manufacturer in India

Stainless Steel Efw Welded Pipe is a type of stainless steel pipes that is produced through electric fusion welding. The electric fusion welding is a process in which high voltage electricity is passed onto the material to heat and melt it. The Stainless Steel EFW Pipe Manufacturers produce these pipes so that other welding materials are not necessary to make the pipes through welding. And since the electric fusion welding does not involve other materials, the Efw SS Pipe can usually be manufactured from 6 inches up to 100 inches in diameter. There are different grades of stainless steel material that can produce pipes in this method.

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.

Stainless Steel EFW Pipe Size Range

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 designation ASTM A312 / ASTM SA312
ASME / ANSI Standard ANSI/ASME B36.19M, ANSI/ASME B36.10M
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 Types Hydraulic, Square, Round, Hex, Rectangle, Honed
Manufacturing Type Welded, 100% X Ray Welded, Fabricated, ERW, CDW
Pipe End Type Abbreviations Beveled 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 Conditions Cold Drawn, Annealed and Pickled, Bright Annealed, Polished
Surface Finish and Coating 2B, 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 services Grooving, 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 form Electric resistance welding (ERW), View Stainless Steel ERW Pipe for detailed information
EFW full form Electric Fusion Welding (EFW)
Specification of ERW & EFW ASME 36.10, ASME 36.19, ASME B16.25, ASME B16.49
ERW & EFW Advantage Custom 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

Stainless Steel EFW Welded Pipe Types

ASTM A312 TP304 EFW

ASTM A312 TP304 EFW

ASTM A312 TP304L EFW

ASTM A312 TP304L EFW

ASTM A312 TP316 EFW

ASTM A312 TP316 EFW

ASTM A312 TP316L EFW

ASTM A312 TP316L EFW

Price of Pipe Sch 10s EFW 304/304l SS A312

US $5.00-$30.00 / kg

Why use x-rays welding for EFW Pipes?

Stainless steel and other metallic pipes are in use in many industries and applications. The metal pipes are made through various processes. There are hot rolling, cold drawing, electric resistance welding and electric fusion welding procedures. The electric fusion welding is done by heating up the metal in the electrode through electric fusion until it melts and then making up the pipe.

Since the material is fully melted, pressurization is not required after the process. X ray welding is relatively new in the electric fusion welding technology. X-rays require special conditions to be used. So the room requirements are higher and costly with X-ray welding. But as a compliment, the X-rays focus on smaller spot with accuracy and can melt the metal faster. This allows the impacted zone to be as minimal as possible.

So the mechanical properties of the material remain intact for the most part. Usually with electric fusion welding there could be a small deformation of the pipes. With X-rays, the deformation is little to none. So the pipe does not need additional treatments in terms of wall thickness, absolute roughness or the shape. For these reasons, manufacturers are turning to X-ray welding for efw pipes.