... /E Q235 Q345 Q390 Q420 Q46... Type: Steel Plate Technique: Hot Rolled Surface Treatment: Coated Application: Steel for machinary,building,bridg... Special Use: High ... ,33.Main application: This kind of steel plate are mainly used for shipbuilding, bridge, machinery, boiler and presure vessel4.Advantage: Guarantee the highest ... ,36,40) Q390qC,D,E-Z Hot rolled high-quality steel plate and coil