Equivalent Grades of Iron
china gb 1348 qt400-18 qt450-10 qt500-7 qt600-3 qt700-2 qt800-2 qt900-2 japan jis g5502 fcd400 fcd450 fcd500 fcd600 fcd700 fcd800 - italy uni 4544 gs370-17 gs400-12 gs500-7 gs600-2 gs700-2 gs800-2 - france nf a32-201 fgs370-17 fgs400-12 fgs500-7 fgs600-2 fgs700-2 fgs800-2 - uk bs 2789d 400/17 420/12 500/7 600/7 700/2 800/2 900/2
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