| Grade | GB: Q345B, Q345C, Q345D, Q345E, Q390A, Q390B,Q390C,Q390D, Q390E,Q420,Q420B,Q420C,Q420DQ420E,Q460D,Q460E, Q500D, Q500E, Q550D, Q550E, Q620D,Q620E,Q690D,Q690EEN: S185, S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690QASTM: Grade B, Grade C, Grade D, Grade 36, Grade 40, Grade 42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80JIS: SPHC, SPFC, SPHD, SPHE |
| Applications | 1.Automobile, Bridges, Buildings. 2.Machinery, Pressure vessel industries. 3.Ship building, Engineering construction. 4.Mechanical manufacturing, Pavement slab, ect. |