给水用孔网钢带聚乙烯复合管
Polyethylene (PE) composite pipes with porous steel strip for water supply
2003-06-03
GB/T 37263-2018
高密度聚乙烯外护管聚氨酯发泡预制直埋保温钢塑复合管
Prefabricated directly buried insulating plastic-steel-plastic composite pipes with polyurethane(PUR) foamed-plastics and high density polyethylene(PE) casing pipes