Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 20221-2023 |
Pressureless buried sewage and drainage rigid polyvinyl chloride (PVC-U) pipes {译} 无压埋地排污、排水用硬聚氯乙烯(PVC-U)管材 |
China National Standards Pressureless |
English PDF |
GB/T 41666.3-2022 |
Plastic piping systems for Trenchless repair of underground Pressureless drainage networks - Part 3: close fitting lining method {译} 地下无压排水管网非开挖修复用塑料管道系统 第 3 部分:紧密贴合内衬法 |
China National Standards Pressureless |
English PDF |
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