合結鋼,碳結鋼,模具鋼,軸承鋼,工具鋼,彈簧鋼,齒輪鋼,冷拉圓鋼,熱扎圓鋼,鍛制圓鋼. 　　圓鋼材質有;8#,10#,15#,20#,25#,30#,35#,45#,20cr,35cr,40cr,45cr,50cr,15mn,16mn(q345b),q345c,q345d,q345e,50mn,65mn,q235b(a3) 15crmo,20crmo,35crmo,42crmo,5crmnmo,38crmoal,yf45mnv, cr12cr12mov,gr15,40mn2,45mn2,60si2mn,20crmnti,20mntib,ml35,t8a,t9a,t10a,t11at12a,t13a,3cr2w8v,20crmnmo,40crmnmo,20crnimo,27simn….. 　在板材里，屬低合金系列。在低合金的材質里，此種材質為最普通的。q345過去的一種叫法為：16mn