... used in boiler pipe & welded pipeCold Rolled CoilQ195, Q215, Q235, Q275, Q345ASTM,GB,JIS,DIN0.4-1.9mm, 1000/1250mmWidely used ... kinds of conventional weapons:the barrel, shells and so on.Structural Steel PipeCr5Mo, Cr9Mo, 15CrMo, 35CrMo, 12Cr1MoV, 10CrMo910, A335P11, A335P91, ... oil & gas fieldsWelded Steel Pipe10#,20#,45#,Q195,Q215,Q235,Q345,etcGB,ASTM20-426mm,0.5-10mmMainly used in petroluem,natrual ...