... S355jr..manufacture) Hot rolled Carbon steel plate sheet (Q235, Q345, SS400, A36, S235JR, S355JR, S45C, S50C, A573 gr65, ST37, ST37-2 ... special requirements;Grade of hot rolled steel plate sheetSS400, ASTM A36, A572,ST37,ST52, Q195, Q215, Q235b,Q345b,S235JR, S355JR ... , S45C, S50CStandardsGB/T709-2006, ASTM A36, JIS G3101, DIN EN 10025, SAE 1045, ASTM A570SurfaceSmooth, ...