Standard: API, ASTM, BS, DIN, GB, JIS, API 5CT, API 5L, ASTM A106-2006, ASTM A252-1998, ASTM A53-2007, BS 1387, DIN 1626, GB 5130, GB/T 13793-1992, GB/T 14291-2006, GB/T 3091-2001, GB/T 9711.1-1997, GB/T 9711.2-1999, JIS G3444-2006, JIS G3466
Grade: 10#-45#, 16Mn, A53-A369, API J55-API P110, Q195-Q345, 10#, 20#, 45#, 16Mn, A210, A250, API J55, API K55, API L80, API N80, API P110, Q195, Q215, Q235, Q345