... 6-610mm wall thickness1.5-40mm Material 10# 20# 45# 16Mn pipe steel1) Application: Petroleum,chemical,power,gas,metallurgy, ... & high pressure boiler header, steam pipe, heating pipeStructure PipeASTM A53/A106, GB8162A, B, 20#, 45#, Q345, 20Mn2, 42CrMoUsed for ... producing mechanical parts and pipe fittingsHydraulic TubeGB1739635#, 45#, 27SiMn ...