ERW Pipe A53 Gr.B 1>Standard: ASTM A53,API5L,API5 ... 3>OD: 6mm - 610mm 4>WT: 0.3mm - 22mm ERW Pipe A53 Gr.B1> Standard: ASTM A106, ASTM A53, ASTM A179 ... 20m(fixed or random)6> Surface Finish: Oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating, Protective Coatings7> Zinc: 80-120g ... 000 ton per yearBelieve us, we can provide most suitable scaffolding pipes to you. ERW Pipe A53 Gr.B