... ,34CrMo4,P5,12CrAISI1010,1020,1045,Gr·65 ,API X52,API X 42and so oneotherDIN,JISspecificationOut diameter6mm-750mmWall thickness0 ... pipe, boiler pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so ... ASTM A 572,ASTM A 709,ASTMA302,ASTMA537,API X52,API X 42 and so on.specificationThickness:0. ... ,430,409specificationRound Square rectangle Stainless Steel Seamless Pipes & Tubes