... , mechanical production 2Low alloy steel plate Q345 A,B,C,D 6-100 mm GB/T1591-1994Steel structure, vehicle production, mechanical production ... mmGB6654-1996Pressure vessel production 6Steel plate for shipbuildingA,B,C,D A32,AH32,D32, DH32,A36, AH36,D36, DH366-32 mm ... , Highway, Bridge production 8Through-thickness characteristicssteel plate Q235C/D-Z15/Z25/Z35 Q345C/D/E-Z25/Z35>11-80 mmGB700-1988, GB ...