The representation of the steel grade is basically the same as that of the alloy structural steel.
2 pairs of professional low-alloy high-strength steel should be marked at the end of the steel number. For example, 16Mn steel, the special steel grade for bridges is “16Mnqâ€, the special steel grade for automobile girders is “16MnLâ€, and the special steel grade for pressure vessels is “16MnRâ€.
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