Standard
API, API 5L, ASTM A106-2006, ASTM A53-2007, ASTM A199, ASME B36.19M-2004, GB/T8162, Gb/t8163, JIS G3463-2006, DIN 1626, BS 1387
Grade
10#-45#, 10#, 20#, 45#, A53-A369, A53(A,B), A106(B,C), A210, A178-C, A135-A, ST35-ST52, ST37, ST35.8, St37-2, St42-2, St45-8, St45-4