product

Centerway steel co., ltd
spiral welded steel pipe,lsaw line pipe,a252 pipe

EFW Pipe

  • Spcification

    Electric Fusion Welding Pipe(EFW steel pipe) refers to an electron beam welding, the use of high-speed movement of the electron beam directed impact kinetic energy is converted to heat the work piece so that the work piece leaving the melt, the formation of the weld. lt is mainly used for welding dissimilar steel welding sheet or which high power density, metal weldment can rapidly heated to high temperatures, which can melt any refractory metals and alloys. Deep penetration welding fast, heat-affected zone is extremely small so small performance impact on the joints, the joint almost no distortion. But EFW welding steel pipe has a requirement on a special welding room because welding using X-rays.

    EFW Pipes and Tubes Material & Grades:

    Stainless Steel EFW Pipes & Tubes: ASTM A - 270, 249, 312, 269, 213, 268, 358 304, 304L, 316, 316L, 317L, 321, 316 Ti, 309, 310, 904L, 410, 420, 430, 431, 202, etc

    Carbon Steel EFW Pipes & Tubes : ASTM A106, IS1239, IS3589, Api 5L, ASTM A106, IS1239, IS3589, Api 5L.

    Alloy Steel EFW Pipes & Tubes : ASTM A691, ASME SA691, CM 65, CM 70, CM 75, CMSH 70, CMSH 75, STM A691 Grade 1CR Grade-12, 1.1/4CR Grade 11, 2.1/4CR Grade 22, 3CR Grade 21, 5CR Grade 5, 9CR Grade 9, Grade 91.

    Outside Diameter:14"OD to 72" OD

    Wall thickness: 8.0mm-200mm

    Length: 4-12.5m

    Uses: Used for Pressure vessel pipeline.


    Standard:

    ASTM A53

    Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

    API 5L

    Specification for Line Pipe(Two levels PSL 1 and PSL 2 of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.)

    A252

    Standard Specification for Welded and Seamless Steel Pipe Piles

    A500

    Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

    A139

    Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)

    A672

    Specification for Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures

    A691

    Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures



    Application:

    1. Pressure pipes

    2. Oil Pipe, Gas pipes

    3. Fluid Pipe, water pipe

    4. Boiler Tubes

    5. Structure Pipe, construction pipe

    6. Fertilizer tube

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