DIN 19534-3(1)
无增塑剂聚氯乙烯(PVC-U)带承插口排水管和管件 第3部分:质量控制与施工
Pipes and fittings of unplasticized poly(vinyl chloride) (PVC-U) with ring seal socket for non-pressure underground drainage and sewerage – Part 3: Quality control and installation
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Pipes and fittings of unplasticized poly(vinyl chloride) (PVC-U) with ring seal socket for non-pressure underground drainage and sewerage – Part 3: Quality control and installation