GB/T 38585-2020 (English Version) PDF

Scope: This standard specifies the terms and definitions, classification and applicable conditions, on-site processing, requirements, test methods, inspection rules, marking, transportation and storage of urban heating directly buried pipeline joint insulation. This standard applies to joint insulation and medium temperature of prefabricated direct-buried hot water insulation pipes (hereinafter referred to as hot water pipes) with medium design pressure less than or equal to 2.5 MPa, medium temperature less than or equal to 120 cc, and occasional peak temperature less than or equal to 140 cc. Or equal to 350 Its steel outer protective pipe prefabricated directly buried steam insulation pipe (hereinafter referred to as steam pipe) joint insulation.

GB/T 38585-2020 Referenced Document

GB/T 13350 Glass wool and its products for thermal insulation
GB/T 23257 Polyethylene coating for buried steel pipeline
GB/T 29046 Testing methods for technical indicators of prefabricated insulated pipes for urban heating*， 2023-09-07 Update
GB/T 29047 Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes*， 2021-08-20 Update
GB/T 34336 Reinforced nanoporous aerogel products for thermal insulation
GB/T 38105 Urban heating—Steel jacket prefabricated directly buried pipes and fittings with vacuum insulating layers
GB/T 8923.1 Preparation of steel substrates before application of paints and related products.Visual assessment of surface cleanliness.Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coa
NB/T 47013.3 Nondestructive testing of pressure equipments.Part 3: Ultrasonic testing
SY/T 0063 Standard test methods for holiday detection in pipelines coatings

2020 GB/T 38585-2020 Technical specification of joint assembling for directly buried insulated pipeline of urban heating