... in morden plants where the heating, rolling and colling . Carbon steel sheet: 1:Type Symbol :SS330,SS400,Q195,Q235,ZJ330B,ZJ400B,20,30 ... ,SPHC,SPHD,SPHE2:Low alloyed steel .Type symbol: QSTE340TM, HSL AS-F50,QSTE380TM, HSL AS-F60, ... ,ZJ450W,ZJ500MC,ZJ500W,SPA-H.SAPH370,SAPH440.3.High strength steel,Type symbol: ESTE550TM,HSLAS-F80,ZJ550MC,ZJ550W,ZJ600MC,ZJ600W,ZJ650W,ZJ650W ...