... engineering, etc The feature of our precision seamless steel pipeItems SpecificationsStandardGBDINASTMGB/T8162-1999 GB/T8163 ... DIN17175 DIN EN10305ASTMA106-2006 ASTMA179-1999 Material10#, 20#, 45#, 16Mn, 30CrMo, Q345, St37, St52, St45, ... DIN17175 DIN EN10305ASTMA106-2006 ASTMA179-1999 Material10#, 20#, 45#, 16Mn, 30CrMo, Q345, St37, St52, St45, ... contact with me! DIN 2391 precision seamless steel pipe