1. Izinto eziphathekayo: Intsimbi eqhelekileyo ye-carbon structural (i-Q isivuno samandla), umgangatho ophezulu we-carbon structural steel (kunye ne-avareji ye-carbon mass fraction ye-20 / 10000), i-alloy structural iron (kunye ne-avareji ye-manganese iqhekeza malunga ne-2% kwi-20Mn2), intsimbi yentsimbi (ZG230-450 isivuno esingaphantsi kwe-230 ...
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