等级
a53 gr.b a106 gr.b, 10 #-45 #, 10 #, 20 #, 45 #, 16mn, 16mn, Q195-Q345, Q235, Q345, Q195, Q215
标准
JIS G3454-2007, JIS G3456-2004, GB/T 8163-1999, GB/T 8162-1999, GB/T8162, Gb/t8163, DIN 1626, DIN 1629/3, DIN 1629/4, DIN 17175, ASTM A106-2006, ASTM A53M-2007, API, API 5L