API, API 5CT, API 5L, API 5DP, ASTM A106-2006, ASTM A179-1990, ANSI B36.10M-2004, DIN 17175
Kelas
10 #-45 #, 10 #, 20 #, A53-A369, A53(A,B), A106(B,C), A179-C, ST35-ST52, ST37, ST42, ST35.8, St42-2, St45-8, API J55-API P110, API J55, API K55, API N80, API L80, API P110