... L shaped steel, Angle steel, Seamless pipe hot rolled ship plateship plate thickness:4mm-100mm ship plate width: ... ,S45C,S50CGB/T711—1988JIS G4051 20053High strength low-alloy structuralsteelsQ295,Q345,Q390,Q420,Q640GB/T1591—19944Structural steels ... for bridgesQ235q, Q345q,Q370q,Q420qGB/T714—20005Hot-rolled steel plates for plasticMouldsSM3Cr2Mo,SM3Cr3NiMoYB/T107—19976Hull structural steelsH ...