ST12 mubyukuri ni ibyuma bisanzwe bikonje bikonje, ST12 ni iy'ubudage (DIN1623), ihwanye na EN10130 DC01, JS SPCC, igipimo cy’abanyamerika ASTM A1008 CS.ST12 nicyuma gisanzwe gikonje, ST13 kashe yerekana ibyuma bikonje bikonje, ST14 ni ndende gushushanya urwego rukonje rukonje, ST12 igaragazwa nkumubare usanzwe wibyuma, kandi q195, spcc, ibikoresho bya DC01 mubyiciro ni bimwe.