Zinthu za carbon steel plate ndi carbon steel plain kapena carbon steel, zomwe ndi chitsulo chokhala ndi mpweya wosakwana 2.11% ndipo palibe zitsulo zomwe zinawonjezeredwa mwadala.Kuwonjezera pa carbon, mulinso pang'ono sulfure, pakachitsulo, phosphorous, manganese ndi zinthu zina.Mpweya zitsulo mbale akhoza kugawidwa mu otsika mpweya, sing'anga mpweya ndi mkulu mpweya malinga okhutira mpweya;malinga ndi kugwiritsa ntchito, amatha kugawidwa kukhala zida, zomanga, ndi zitsulo zomangira zaulere;molingana ndi njira ya deoxidation, amatha kugawidwa kukhala chitsulo chowira, chitsulo chopha pang'ono, chitsulo chophedwa, ndi chitsulo chapadera chophedwa;Malinga ndi njira ya smelting, akhoza kugawidwa mu Converter zitsulo, lotseguka m'ng'anjo ng'anjo zitsulo ndi zitsulo ng'anjo magetsi.Kaboni kalasi makamaka m'gulu Q195, Q215, Q235, Q255, Q275 etc.