... , SS400, A36, S235JR, S355JR, S45C, S50C, A572, St37, St37-2, ST52 2. Steel PlatesUsed area: Ship building, Engineering construction, Mechanical manufacturing, Pavement slab ... , Q345, SS400, A36, S235JR, S355JR, S45C, S50C, A572, St37, St37-2, ST52Standard: GB/T709-2006, ASTM A36, JIS G3101, DIN EN ...