Standard: BS 1387, BS 1139, BS 6363, JIS G3101, JIS G3466, GB/T8163, GB/T3901 Grade: 10#-45#, 16Mn, A53-A369, ST35-ST52, Q195-Q345 Grade: 10#, 20#, 45#, 16Mn, A53(A,B), A106(B,C), St37, St52, St42, St ... ...
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