Standards: A53, A106, API 5L, A179, A192, A209, A210, A519, DIN2391, DIN17175, DIN1629,
DIN1630, DIN2440, DIN2448, BS EN10216-2, BS-EN 10240, BS EN10305-1, BS3059
Material: A, B, C, X42, X52, X60, A-1, A179, A192, T1, STKM11A, STKM12A, STB340,20G, 3203,604,40., 37.0., 44.0., 52.0., 35., 45., 52, St35.8, St45.8, 10#, 20#, 35#, 45#
China