埋地硬聚氯乙烯给水管道工程技术规程(附条文说明)
Technical specification for buried unplasticized polyvinyl chloride(PVC-U)pipeline of water supply engineering
T/CECS 41-2004
建筑给水硬聚氯乙烯管管道工程技术规程
2004-05-08
T/CECS 635-2019
埋地排水用聚乙烯共混聚氯乙烯双壁波纹管道工程技术规程
2019-11-08
T/CECS 635-2023
埋地排水用聚乙烯共混聚氯乙烯双壁波纹管道工程技术规程
2023-11-20
CECS 185-2005
建筑排水中空壁消音硬聚氯乙烯管管道工程技术规程(附条文说明)
Technical specification for unplasticized polyvinyl chloride double-wall noise-reducing pipeline engineering of water sewerage in buildings
CECS 41-2004
建筑给水硬聚氯乙烯管管道工程技术规程(附条文说明)
Technical specification for PVC--U pipeline engineering for water supply in buildings