I-ST12 ngokwenene yintsimbi eqhelekileyo eqengqelekayo ebandayo, i-ST12 yeyomgangatho waseJamani (DIN1623), ilingana ne-EN10130 DC01, JS SPCC, umgangatho waseMelika we-ASTM A1008 CS.ST12 yintsimbi eqhelekileyo eqengqelekayo ebandayo, ST13 isitampu sentsimbi eqengqelekayo, ST14 inzulu. umzobo grade intsimbi eqengqelekayo ebandayo, ST12 ichazwa njengenombolo yentsimbi eqhelekileyo, kunye q195, spcc, DC01 grade imathiriyeli ngokusisiseko iyafana.