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- GB/T 29047-2021e 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

【国家标准】 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
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适用范围:
This document specifies the product structure, requirements, test methods, inspection rules, as well as marking, transport and storage of prefabricated directly buried insulating pipes (hereinafter referred to as insulating pipes) and fittings, comprising outing casing pipes of high density polyethylene(hereinafter referred to as casing pipes), rigid polyurethane foam plastic insulation layers (hereinafter referred to as insulation layers), steel service pipes or steel fittings.
This document is applicable to prefabricated directly buried insulating pipes and fittings, for continuous operation at various temperatures up to 120 ℃ and occasionally with a peak temperature up to 130 ℃.
This document is applicable to prefabricated directly buried insulating pipes and fittings, for continuous operation at various temperatures up to 120 ℃ and occasionally with a peak temperature up to 130 ℃.
标准号:
GB/T 29047-2021e
标准名称:
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
英文名称:
Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes标准状态:
现行-
发布日期:
2021-08-20 -
实施日期:
2022-03-01 出版语种:
英文
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