... ISO9001 seamless steel pipeTypeASTM A106 B seamless steel structure pipe/tubeSteel Grade10#, 20# 25# 45# Q195 Q235 ... ,12CrMo,15CrMo,20CrMo,42CrMo,12Cr1Mov,10CrMo910,A355P22,STFA25 and so onStandards 1.GB: GB5310-95; GB8087- ... 15Mo35.API:APL 5LAPI 5CT ;API LIN E PIPE and so on6.we can also produce according to ... black paint on the face4.anti-rust oil and caps on both ends5.galvanizedUsage Range1.structral ...