等级
20 #, 45 #, 10Cr9Mo1VNb, 16mn, Q195, Q215, Q235, Q345, STBA25, STBA26, STPG42, 10 #-45 #, 10Cr9Mo1VNb, 16mn, Q195-Q345, STBA20-STBA26, STPG42
标准
API 5L, ASTM A53-2007, GB/T 12771-2000, GB/T 3091-2001, GB/T 3094-2000, GB/T3901, JIS G3466, API, GB/T3091-2008,GB/T3092-2008,GB/T14291-2000,GB/T14980-1994