... industry,decoration,machinary furniture,automobile,industry instrument,agriculture,etc.Seamless Steel PipeCr5Mo, Cr9Mo, 15CrMo, 35CrMo, 12Cr1MoV, 10CrMo910, A335P11, ... ,10.3-508mmUsed in oil & gas fieldsWelded Steel Pipe10#,20#,45#,Q195,Q215,Q235,Q345,etcGB,ASTM20-426mm, ... 0.5-10mmMainly used in petroluem,natrual gas and heating pipelineStainless Steel ...