API, API 5CT, API 5L, ASTM A106-2006, ASTM A53-2007, BS 1387, BS EN 39, DIN 2391, DIN 17175, GB/T 3091-2001, GB/T8162, Gb/t8163, JIS G3444-2006, JIS G3441
Grade
10#-45#, 20#, 16mn, 16mn, A53-A369, A53(A,B), A106(B,C), API J55-API P110, API K55, API N80, API L80, Q195-Q345, Q235, Q345, Q195, ST35-ST52, ST37, ST52, STBA20-STBA26, STBA22, STBA20, STPA22-STPA26, STPA22