1.stainless steel pipe 2.carbon steel pipe 3.sch40 black steel pipe 4.ERW,LSAW,SSAW 5.black steel seamless pipes astm a106 Our seamless steel pipes are in ... pharmaceutical, chemicals, shipbuilding, papermaking, and metallurgy, and so on.TypeSeamless steel pipeSizeSeamless Pipe: 1/2” ~24”, DN15~DN600 OD21.3MM~609 ... , the balance against with the copy of B/L) black steel seamless pipes sch40 astm a106