(1) Ingredient index: The chemical composition of angle steel belongs to the series of rolled steel for general structure. The main test indicators are C, Mn, P and S. Depending on the grade, the content varies, and the approximate range is C<0.22%, Mn: 0.30-0.65%, P<0.060%, and S<0.060%.
(2) Inspection method: When testing the above chemical components, the commonly used standard inspection methods are GB223, JISG1211-1215, BS1837, BS manual 19, ГОСТ22536 and so on.
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