DIN V 4279-7-1994 水压力管的内压试验.PE-LD低密度聚乙烯压力管.PE-LD高密度聚乙烯压力管(PE80和PE100).交联聚乙烯压力管PEX.未增塑聚氯乙烯压立管PVC-O
Internal pressure test of pressure pipelines for water - Pressure pipes of low-density polyethylene PE-LD, pressure pipes of high density polyethylene PE-HD (PE 80 and PE 100), pressure pipes of cross-linked polyethylene PE-X and pressure pipes of unplast