... a form until the steel is shaped into a hollow tube. The seamless pipe is then finished to dimensional and wall thickness specifications ... WB36,BCrMo44,34CrMo4,P5,12CrAISI1010,1020,1045,Gr·65 ,API X52,API X 42and so oneotherDIN,JISspecificationOut diameter6mm-750mmWall thickness0.3- ... pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so on ...