标准
API, API 5CT, API 5L, ASTM A106-2006, ASTM A333-2005, ASTM A53M-2007, ASME B36.19M-2004, ASTM A335M-2006, DIN EN 10025
等级
10 #-45 #, 10 #, 20 #, 45 #, A53-A369, A106(B,C), A333, A335 P11, A335 P5, A335 P9, A335 P1, A335 P23, API J55-API P110, API J55, API K55, API N80, API P110, ST35-ST52, ST52