The use of ERW：
ERW is used for transporting oil、gas and other vapour-liquid objects and can meet the requirements of high and low pressure.besides, widely used in aviation, aerospace, energy, electronics, automobiles, light industry as well as various industry departments. So far,It occupy a decisive position in the field of transporting tube all over the world.

Size:
Outer Diameter: 6mm-610mm (1/16"-24")
Wall Thickness: 0.3mm-22mm
Length: 0.5mtr-20mtr

Standard
BS:1387, EN10217:S185, S235,S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52,ASTM A 53,API 5L:GB/T9711,GB/T3091, SY/T5037, SY/T 5040,CJ/T 3022,

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)

Test:
Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.

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