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ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe

ASTM A312 TP304 Stainless Steel Welded Pipe28inchxsch10x6m
  • ASTM A312 TP304 Stainless Steel Welded Pipe28inchxsch10x6m
  • ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
  • ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
  • ASTM-A358/A358M-Electric-Fusion-Welded Austenitic-Chromium Nickel Stainless Steel Pipe
  • ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
  • ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
  • ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
  • ASTM A269 TP304/TP304L,TP316/TP316L Stainless Steel Coiled Tube
  • ASTM A358 TP321-321H CL.1 Stainless Steel EFW Pipes
  • ASTM A358 TP316L Welded Stainless Steel Industrial Pipes
  • ASTM A312 TP304L Stainless_Steel Welding_Pipe
  • ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
  • ASTM A358 TP347/347H CL.1 Stainless Steel EFW Pipes 1
Model No.︰-
Brand Name︰ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790
Country of Origin︰-
Unit Price︰US $ 5.8 / Kg
Minimum Order︰2000 Kg
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Product Description

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. These pipes are welded by rolling the plates and welding the seam and then cleaning the weld flash with scarfing blades.

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.

Reference Standards

ASTM Specification
ASTM A 358/A 358M Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service. 

Five Classes of pipes are covered :

ASTM A358 Class 1 - Pipe shall be double welded by processes employing filler metal in all passes and shall be completely radiographed.

ASTM A358 Class 2 - Pipe shall be double welded by processes employing filler metal in all passes. No radiography is required.

ASTM A358 Class 3 - Pipe shall be single welded by processes employing filler metal in all passes and shall be completely radiographed.

ASTM A358 Class 4 -Pipe Same as ASTM A358 Class 3 except that the weld pass exposed to the inside pipe surface may be made without the addition of filler metal.

ASTM A358 Class 5 - Pipe shall be double welded by processes employing filler metal in all passes and shall be spot radiographed.

ASTM A409/SA409 Welded Large Diameter Austenitic Steel Pipe for Corrosive or High Temperature Service
ASTM A 778 Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products
ASTM A789/A789M, ASME SA789/SA789M Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASTM A790/A790M, ASME SA790/SA790M Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM A813/A813M Standard Specification for Single- or Double-Welded Austenitic Stainless Steel Pipe
ASTM A814/A814M Standard Specification for Cold-Worked Welded Austenitic Stainless Steel Pipe

German Standards
DIN 17455 Welded circular stainless steel tubes with general quality requirements -Technical delivery conditions
DIN 17457 Welded circular austenitic stainless steel tubes subject to special requirements

EN Standards
EN 10216-5 Welded Stainless Steel Tube
EN 10296-2 Welded circular steel tubes for mechanical and general engineering purposes - Part 2: Stainless steel

JIS G3468 Large Diameter Welded Stainless Steel Pipes
JIS G3446 Stainless Steel Pipes for Machine and Structural Purposes

 

Product Image

ASTM A312 TP304 Stainless Steel Welded Pipe28inchxsch10x6m
ASTM A312 TP304 Stainless Steel Welded Pipe28inchxsch10x6m

ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe


ASTM-A358/A358M-Electric-Fusion-Welded Austenitic-Chromium Nickel Stainless Steel Pipe
ASTM-A358/A358M-Electric-Fusion-Welded Austenitic-Chromium Nickel Stainless Steel Pipe


ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe
ASTM A312,ASTM A358,ASTM A409,ASTM A778,ASTM A790,ASTM A928,JIS G3468 EFW Pipe


ASTM A269 TP304/TP304L,TP316/TP316L Stainless Steel Coiled Tube
ASTM A269 TP304/TP304L,TP316/TP316L Stainless Steel Coiled Tube

ASTM A358 TP321-321H CL.1 Stainless Steel EFW Pipes
ASTM A358 TP321-321H CL.1 Stainless Steel EFW Pipes

ASTM A358 TP316L Welded Stainless Steel Industrial Pipes
ASTM A358 TP316L Welded Stainless Steel Industrial Pipes

ASTM A312 TP304L Stainless_Steel Welding_Pipe
ASTM A312 TP304L Stainless_Steel Welding_Pipe


ASTM A358 TP347/347H CL.1 Stainless Steel EFW Pipes 1
ASTM A358 TP347/347H CL.1 Stainless Steel EFW Pipes 1

Related Products
ASTM A269 TP316/316L Seamless Stainless Steel Tube
ASTM A213,ASTM A269,ASTM A312,ASTM A789,EN10216-5,EN 10297-2 Seamless SS Tube
US $ 8.85
ASTM A213,ASTM A269,ASTM A312,ASTM A790,EN10216-5,EN 10297-2  Seamless SS Tube
ASTM A213,ASTM A269,ASTM A312,ASTM A790,EN10216-5,EN 10297-2 Seamless SS Tube
US $ 8.85
ASTM A213,ASTM A312,ASTM A789,ASTM A790,DIN 17458,EN10216-5,EN 10297-2 Seamless SS Tube
ASTM A213,ASTM A312,ASTM A376, DIN 17458,EN10216-5,EN 10297-2 Seamless SS Tube
US $ 8.5
ASTM A312 TP316H stainless_steel_welded_tube
ASTM A249,ASTM A269,ASTM A312,EN 10217-7,EN 10296-2 Welded Stainless Steel Tube
US $ 7.8

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