40的无缝钢管多少钱一米
DN40,指内径40mm,也就是一寸半,有焊管和镀锌管之分,普通壁厚35mm重量384kgm加厚425mm重量458kgm;2252833235445555665775825壁厚0405060811214151618222252833235445555665参考资料国家标准,GB#47T8162199...
DN40,指内径40mm,也就是一寸半,有焊管和镀锌管之分,普通壁厚35mm重量384kgm加厚425mm重量458kgm;2252833235445555665775825壁厚0405060811214151618222252833235445555665参考资料国家标准,GB#47T8162199...