GB/T 39246-2020 (English Version) PDF

Scope: This standard specifies the terms and definitions, product structure, requirements, test methods, inspection rules and signs, transportation and storage of prefabricated direct-buried thermal insulation pipe fittings of high-density polyethylene no-glare protective pipe. This standard is applicable to the manufacture and inspection of prefabricated direct-buried thermal insulation pipe fittings of high-density polyethylene without external protective pipe with the temperature of the conveying medium (long-term operating temperature) not higher than 120 "C, and the peak temperature not higher than 130 ".

GB/T 39246-2020 Referenced Document

GB 50236 Code for construction of field equipment, industrial pipe welding engineering
GB/T 12459 Steel buttwelding pipe fittings—Types and parameter
GB/T 13401 Steel buttwelding pipe fittings—Technical specification
GB/T 18475 Thermoplastics materials for pipes and fittings for pressure applications classification and designation--Overall Service(design) coefficient
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 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 47013.2 Nondestructive testing of pressure equipments.Part 2: Radiographic testing
NB/T 47013.3 Nondestructive testing of pressure equipments.Part 3: Ultrasonic testing
NB/T 47014 Welding procedure qualification for pressure equipment
SY/T 5257 Steel bends for oil and gas transmission

2020 GB/T 39246-2020 Prefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe