1、钢板Q460qD技术标准：GB/T 714-2015 桥梁用结构钢2、桥梁板Q460qD化学成分牌号CSiMnPSNiCrMoQ460qD≤0.11≤0.551~1.7≤0.025≤0.02≤0.3≤0.5≤0.25CuNbVTiAltAlsNBPcmMax≤0.30.010~0.090.010~0.080.006~0.030.015~0.050.010~0.045≤0.008≤0.0005≤0.23成分备注：B、…