I-ST12 empeleni iyinsimbi evamile egoqiwe ebandayo, i-ST12 ingeyezinga laseJalimane (DIN1623), elilingana ne-EN10130 DC01, JS SPCC, i-ASTM A1008 CS.ST12 evamile yaseMelika iyinsimbi evamile egoqiwe ebandayo, i-ST13 yokunyathela ibanga insimbi egoqiwe ebandayo, i-ST14 ijulile umdwebo wensimbi egoqiwe ebandayo, i-ST12 ichazwa njengenombolo yensimbi evamile, futhi i-q195, spcc, DC01 grade material iyafana.