... thickness1.5-40mm Material 10# 20# 45# 16Mn pipe steel1) Application: Petroleum,chemical,power,gas,metallurgy, shipbuilding ... 20#, 45#, Q345, 20Mn2, 42CrMoUsed for producing mechanical parts and pipe fittingsHydraulic TubeGB1739635#, 45#, 27SiMn, 20CrMo4, 30CrMo4Mining machineryOil ... 12CrMo, 15CrMoHigh pressure chemical equipment and tubeSeamless Steel Pipe(SMLS) is made from a solid round steel ...