... ,Q235 Q345,S235jr,S275jr,S355jr..manufacture) Hot rolled Carbon steel plate sheet (Q235, Q345, SS400, A36, S235JR, S355JR, S45C, S50C, A573 gr65 ... or as customers’ special requirements;Grade of hot rolled steel plate sheetSS400, ASTM A36, A572,ST37,ST52, Q195, Q215, Q235b,Q345b ...