Tiêu chuẩn
Api, API 5L, A210-1996 ASTM, A179-1990 ASTM, A254-1997 ASTM, BS 4568, DIN EN 10216-1-2004, DIN 28180-2007, Din 17175, GB/T 14976-2002, C8305-1999 JIS
Lớp
10 #-45 #, 10 #, 20 #, 16mn, 16mn, Q195-Q345, Q235, Q345, Q195, Q215, ST35-ST52, St37-2, St42-2, St45-8, St35.4, St52.4, St45-4, St37.4