... bridgesQ235q, Q345q,Q370q,Q420qGB/T714—20005Hot-rolled steel plates for plasticMouldsSM3Cr2Mo,SM3Cr3NiMoYB/T107—19976Hull structural steelsH 6~160W 1500~4200L 6000~18000A,B ... ,D,E,A32,D32,E32,A36,D36,E36GB712—2009Rules of classificationsociety7Steel plates ...