Products

ERW Steel Pipe

ERW Steel Pipe

    ERW steel pipes are manufactured by low-frequency or high-frequency resistance "resistance". They are round pipes welded from steel plates with longitudinal welds.

    There are a lot of pipes could be manufactured by ERW process. Here below we list for the most common standards in pipelines.
     
    Standard for erw pipe ASTM A53 B, ASTM A178, ASTM A252 GR.2
    API 5L X42/46/52/56/60/70
    ASTM A500, ASTM A513
    EN 10204/10217 S235JR,S275JR,S355,S355JR,S355J2H
    for efw pipe
    carbon steel efw pipe: ASTM A671,ASTM A672
    alloy steel efw pipe: ASTM A691
    Sizes Out diameter 1/2" -24" (21.3mm-610mm)              
    Wall Thickness 1.65mm-20mm

    Application of ERW steel pipe
    For ERW Line Pipe
    For ERW Casing
    For ERW Structure Tube
    For High pressure and high temperature




    Manufacturing Process of ERW steel pipe

    Electric Resistance Welded (ERW) pipe is manufactured by cold forming a flat steel strip into a rounded tube and passing it through a series of forming rollers to obtain a longitudinal seam. The two edges are then simultaneously heated with a high frequency current and squeezed together to form a bond. The longitudinal ERW seam does not require filler metal.




    Product Details of ERW steel pipe

    Pipe End: square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled,
    Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy,  Fusion Bond Epoxy, 3-layers PE)
    Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.
    Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test,  Hardness Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, NDT TEST ( ET TEST, RT TEST, UT TEST)




    Transportation of ERW steel pipe
    When transporting, loading and unloading erw welded pipes, special hoisting and transportation tools should be used to avoid scratching the surface.



    Advantages of ERW steel pipe

    High efficiency, low cost, material saving, easy automation.

     

    Out diameter                                    Wall Thickness
    1/2" -24"                                                                       1.65-20mm

    Small diameter
    Out diameter Sch 5 Sch 10 Sch 40
    Inch mm Thickness Kg/mtr Thickness Kg/mtr Thickness Kg/mtr
    1/2" 21.3 1.65 0.81 2.11 1.01 2.77 1.29
    3/4" 26.7 1.65 1.03 2.11 1.30 2.87 1.71
    1" 33.4 1.65 1.31 2.77 2.12 3.38 2.54
    1 1/4" 42.2 1.65 1.93 2.77 3.15 3.68 4.11
    1 1/2" 48.3 1.65 1.93 2.77 3.15 3.68 4.11
    2" 60.3 1.65 2.42 2.77 3.98 4.81 5.31
    3" 88.9 2.11 4.58 3.05 6.54 5.49 11.45
    3 1/2" 101.6 2.11 5.25 3.05 7.52 5.74 13.77
    4" 114.3 2.11 5.25 3.05 7.52 5.74 13.77
    5" 141.3 2.77 9.50 3.40 11.74 6.55 22.10
    6" 168.3 2.77 11.47 3.40 14.04 7.11 28.68
    8" 219.1 2.77 14.99 3.76 20.25 8.18 43.16

    Large diameter
    OD WT                                  
    Inch mm 8 5/8" 219.1mm 10 3/4" 273.1
    mm
    12 3/4" 325.0
    mm
    14" 355.6
    mm
    16" 406.4
    mm
    18" 457.7
    mm
    20" 508.0
    mm
    24" 610
    mm
    24 4/5" 630.0
    mm
    0.157 4.0 ---- ---                                
    0.197 5.0 --- --- --- --- --- --- --- ---                    
    0.236 6.0 --- --- --- --- --- --- --- --- --- --- --- ---            
    0.276 7.0 --- --- --- --- --- --- --- --- --- --- --- --- --- ---        
    0.315 8.0 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---    
    0.354 9.0 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---    
    0.394 10.0 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
    0.133 11.0 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
    0.492 12.5 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
    0.551 14.0         --- --- --- --- --- --- --- --- --- --- --- --- --- ---
    0.630 16.0         --- --- --- --- --- --- --- --- --- --- --- --- --- ---
    0.689 17.5                 --- --- --- --- --- --- --- --- --- ---
    0.748 19.0                     --- --- --- --- --- --- --- ---
    0.787 20.0                         --- --- --- --- --- ---
    ASTM A53 B ERW Steel PipeASTM A500 ERW Steel Pipe

Know more about this product price, catalogue, mill test certificate,  please inquiry to: sales@nan-steel.com

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