厚板价 选购指南
JIS标准结构钢SGV480平板 SGV42中厚板价
SGV46 SGV49 SLA235A ALA235B ALA325B ALA325B ALA365 ALA410 SL2N255 SL3N255 日本JIS标准机械结构用钢牌号: S10C S12C S15C S17C S20C S22C S25C ......
SGV46 SGV49 SLA235A ALA235B ALA325B ALA325B ALA365 ALA410 SL2N255 SL3N255 日本JIS标准机械结构用钢牌号: S10C S12C S15C S17C S20C S22C S25C ......