... . Carbon steel sheet:1:Type Symbol: SS330,SS400,Q195,Q235,ZJ330B,ZJ400B,20,30,SPHC,SPHD,SPHE2:Low alloyed steelType symbol: QSTE340TM ... ,ZJ500MC,ZJ450W,ZJ500MC,ZJ500W,SPA-H.SAPH370,SAPH440.3.High strength steelType symbol: ESTE550TM,HSLAS-F80,ZJ550MC,ZJ550W,ZJ600MC,ZJ600W,ZJ650W ...