GB/T 39246-2020
ActivePrefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe
高密度聚乙烯无缝外护管预制直埋保温管件
Application Summary AI generated
This standard specifies the technical requirements, test methods, and inspection rules for prefabricated directly buried insulating fittings that use seamless high-density polyethylene (HDPE) as the outer casing pipe. It is applied in the construction of district heating and cooling systems, specifically for underground pipeline networks where thermal insulation and corrosion protection are critical for long-term durability. The standard ensures the fittings meet performance criteria for mechanical strength, thermal efficiency, and resistance to soil and moisture in buried applications.
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