Soft mechanical joint grey cast iron pipe 柔性机械接口灰口铸铁管
Gray iron castings for pipe fittings 灰口铸铁管件
Gray iron castigs for pipe fittings 灰口铸铁管件
Depend on the invalidation of the current network ' s statistic ; this thesis selected the gray cast iron pipes as the main object to research 根据对目前国内管网失效情况的统计,本文确定灰口铸铁管管壁强度可靠度作为主要研究对象。
We find that the cast - iron pipe is only mildly corrosive and the indoor pipeline is just rust - eaten , but the seamless steel pipe corrodes badly 结果表明:主干线灰口铸铁管整体状况良好,只有局部轻度腐蚀;庭院无缝钢管腐蚀较严重;户内管道大多存在不同程度的锈蚀。