TCECS10011-2019 埋地排水用聚乙烯共混聚氯乙烯双壁波纹管材.pdf

ICS91.140P45团体标准旦T/CECS10011—2019埋地排水用聚乙烯共混聚氯乙烯双壁波纹管材Polyethylenemixedpolyvinylchloridedoublewallcorruga...