... and colling . Hot rolled steel sheets and strips : Which steel type include carbon steel,low alloyed steel, high strength steel and corrugated steel with lath and ... symbols are 20 and 30.. The performance of this steel.1: Carbon steel : Type Symbol :SS330,SS400,Q195,Q235,ZJ330B, ... ,ZJ500MC,ZJ500W,SPA-H.SAPH370,SAPH440.3:High strength steel,Type symbol: ESTE550TM,HSLAS-F80,ZJ550MC,ZJ550W,ZJ600MC,ZJ600W ...