GB/T 29047-2012
AbolishedPrefabricated directly buried insulating pipes and fittings with polyurethane [PUR]foamed-plastics and high density polyethylene [PE]casing pipes
高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件
Application Summary AI generated
This standard specifies the technical requirements, test methods, and inspection rules for prefabricated directly buried insulating pipes and fittings that use polyurethane foam as the insulation layer and high-density polyethylene as the outer casing. It is applied in district heating and cooling systems, as well as industrial pipeline networks, where pipes are installed underground without a separate conduit. The standard ensures thermal efficiency, mechanical strength, and long-term durability for buried pipelines in urban infrastructure projects.
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