GB/T 38942-2020
Pressure piping code—Utility piping (English Version)

Standard No.

GB/T 38942-2020

Language

Chinese, Available in English version

Release Date

2020

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 38942-2020

Scope

1.1 This standard specifies the basic safety-related requirements for materials, design and calculation, production and installation, inspection and testing, safe operation and maintenance of public pipelines (gas pipelines and heat pipes). 1.2 This standard applies to the following urban gas pipelines and urban thermal pipelines: a) Gas pipelines: public gas pipelines from gas stations such as gate stations, storage and distribution stations, various gas source stations to users or between factories and stations and its ancillary facilities. Ancillary facilities include line valve rooms, pressure regulating stations (including pressure regulating boxes), condensate tanks, etc. See Figure 1 for details. b) Thermal pipelines: steam pipelines, hot water pipelines and their ancillary facilities laid within the town from the heat source outlet demarcation point to the heat user (civilian or industrial) inlet demarcation point, see Figure 2 for details. The design pressure of steam medium is less than or equal to 2.5 MPa, and the design temperature is less than or equal to 350°C; the design pressure of hot water medium is less than or equal to 2.5 MPa, and the design temperature is less than or equal to 200°C. 1.3 This standard does not apply to the following gas pipelines and thermal pipelines: a) Gas pipelines in stations in gas systems (except pressure regulating stations) and thermal pipelines in stations in thermal systems (except thermal stations and heat distribution stations); b) Gas and heat pipelines inside industrial users (divided by factory boundaries); c) Gas pipelines inside commercial and residential users (bounded by user inlet pipe valves) and heat pipes (bounded by heat inlets); d) Inside gas and heat equipment pipeline. Note: This standard applies to the pipeline system. This standard does not apply to the scope of this standard. The gas pipeline between the valve chamber and pressure regulating station (including pressure regulating box) and the gate station included in this standard shall comply with GB/T34275. When laying In urban built-up areas, this standard can be followed.

GB/T 38942-2020 Referenced Document

• CJ/T 246 Urban heating prefabricated directly buried steam insulation pipes and piping accessories
• CJ/T 402 Bellows expansion joints for city heating pipeline
• CJ/T 480 Prefabricated directly buried composite insulating pipes with polyurethane (PUR) foamed-plastics and high density polyethylene(PE) casing pipes
• CJ/T 487 Sleeve expansion joint for district heating system
• CJJ 203 Technical specification for emergency repair of district heating system
• CJJ 28-2014 Code for construction and acceptance of city heating pipelines
• CJJ 34 Design code for city heating network
• CJJ 63 Polyethylene gas pipeline engineering technical standards
• CJJ 88 Technical specification for operation and maintenance of city heating system
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• CJJ/T 104 Technical specification for directly buried steam heating pipeline In city
• CJJ/T 153 Standard for city gas signs
• CJJ/T 220 Standard for city heating system signs
• CJJ/T 250 Technical regulations for urban gas pipeline crossing engineering
• CJJ/T 254 Technical specification for leakage surveillance system of directly buried heating pipe
• CJJ/T 81 Technical specification for directly buried hot-water heating pipeline in city
• DL/T 5072 Code for design of thermal power plant thermal insulation paint
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• GB 50016 Architectural design code for fire protection
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• GB 50052 Code for design electric power supply system
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• GB 50423 Code for design of oil and gas transportation pipeline crossing engineering
• GB 50460 Construction specification for spanning project of oil and gas transmission pipeline
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• GB 50764-2012 Design code of power piping for power plant
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• GB/T 12241 Safety valves—General requirements*， 2021-03-09 Update
• GB/T 12242 Pressure relief devices—Performance test code*， 2021-03-09 Update
• GB/T 12243 Spring loaded safety valves*， 2021-04-30 Update
• GB/T 12459 Steel buttwelding pipe fittings—Types and parameter
• GB/T 12754 Prepainted steel sheet and strip
• GB/T 12777 General specification for metal bellows expansion joints
• GB/T 13295 Amendment No. 1 for ductile iron pipes, fittings and accessories for water and gas
• GB/T 13350 Glass wool and its products for thermal insulation
• GB/T 13401 Steel buttwelding pipe fittings—Technical specification
• GB/T 13402 Large diameter steel pipe flanges
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• GB/T 15558.1 Buried polyethylene (PE) piping systems for gas use Part 1: General principles*， 2023-11-27 Update
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• GB/T 15558.3 Buried polyethylene (PE) piping systems for gas use Part 3: Fittings
• GB/T 17116.1 Pipe supports and hangers—Part 1:Technical specification
• GB/T 17116.2 Pipe supports and hangers—Part 2: Pipe attachments
• GB/T 17116.3 Pipe supports and hangers—Part 3:Middle connection attachments and building structure attachments
• GB/T 17794 Preformed flexible elastomeric foam thermal insulation*， 2021-08-20 Update
• GB/T 19285 Inspection of corrosion protection for buried steel pipelines
• GB/T 19292.1 Corrosion of metals and alloys—Corrosivity of atmospheres—Part 1: Classification, determination and estimation
• GB/T 19326 Forged branch outlet fittings*， 2022-07-11 Update
• GB/T 19473.1 Polybutene (PB) piping systems for hot and cold water installations—Part 1: General*， 2020-11-19 Update
• GB/T 19473.2 Polybutene (PB) piping systems for hot and cold water installations—Part 2: Pipes*， 2020-11-19 Update
• GB/T 19473.3 Polybutene (PB) piping systems for hot and cold water installations—Part 3: Fittings*， 2020-11-19 Update
• GB/T 21447 Specifications for steel pipeline external corrosion control
• GB/T 21448 Specification of cathodic protection for underground steel pipelines
• GB/T 229 Metallic materials—Charpy pendulum impact test method*， 2020-09-29 Update
• GB/T 23257 Polyethylene coating for buried steel pipeline
• GB/T 2518 Continuously hot-dip zinc and zinc alloy coated steel sheet and strip
• GB/T 25775 Technical delivery conditions for welding consumables.Type of product,dimensions,tolerances and markings
• GB/T 25778 Procurement guidelines for welding consumables
• GB/T 28799.1 Polyethylene of raised temperature resistance（PE-RT）piping systems for hot and cold water installations—Part 1: General*， 2020-11-19 Update
• GB/T 28799.2 Polyethylene of raised temperature resistance (PE-RT) piping systems for hot and cold water installations—Part 2: Pipes*， 2020-11-19 Update
• GB/T 28799.3 Polyethylene of raised temperature resistance (PE-RT) piping systems for hot and cold water installations—Part 3: Fittings*， 2020-11-19 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 29168.1 Petroleum and natural gas industries—Induction bends, fittings and flanges for pipeline transportation systems—Part 1: Induction bends*， 2021-08-20 Update
• GB/T 29168.2 Petroleum and natural gas industries.Induction bends, fittings and flanges for pipeline transportation systems.Part 2:Fittings
• GB/T 29639 Guidelines for enterprises to develop emergency response plan for work place accidents*， 2020-09-29 Update
• GB/T 3091 Welded steel pipes for low pressure liquid delivery
• GB/T 32270-2015 Pressure piping code.Power piping
• GB/T 32563 Non-destructive testing.Ultrasonic testing.Test method for phased-array ultrasonic testing
• GB/T 3280 Cold rolled stainless steel plate, sheet and strip
• GB/T 34275 Pressure piping code—Long-distance pipeline
• GB/T 34336 Reinforced nanoporous aerogel products for thermal insulation
• GB/T 34611 Rigid polyurethane spray polyethylene winding prefabricated directly buried insulating pipes
• GB/T 35842 Technical requirements for pre-insulated directly buried valve of urban heating
• GB/T 35979 Technical specification for selection,installation,use and maintenance of metal bellows expansion joints
• GB/T 35990 Metal bellows expansion joints for pressure piping
• GB/T 37190 General requirements for the entire life cycle of pipeline corrosion control projects*， 2023-12-28 Update
• GB/T 37228 Societal security—Emergency management—Requirements for incident response
• GB/T 37261 Ball joint compensator for district heating system
• GB/T 37263 Prefabricated directly buried insulating plastic-steel-plastic composite pipes with polyurethane [PUR]foamed-plastics and high density polyethylene [PE]casing pipes
• GB/T 37369 Inspection and assessment of crossing and aerial crossing of buried steel pipelines
• GB/T 37827 Welded ball valve for urban heating
• GB/T 37828 Bidirectional metal to metal sealed butterfly valve for urban heating
• GB/T 38097 Urban heating—Prefabricated directly buried insulating pipes and fittings with polyurethane(PUR) foamed-plastics and glass fiber reinforced plastics protect layers
• GB/T 38105 Urban heating—Steel jacket prefabricated directly buried pipes and fittings with vacuum insulating layers
• GB/T 38343 Technical specification for flange joints installation
• GB/T 3880 Aluminium and aluminium alloy rolled sheet
• GB/T 4622.1 Spiral wound gaskets for pipe flanges—Part 1: PN designated*， 2022-10-12 Update
• GB/T 4622.2 Spiral wound gaskets for pipe flanges—Part 2: Class designated*， 2022-10-12 Update
• GB/T 4622.3 Specification of spiral wound gaskets
• GB/T 50470 Seismic Technical Specifications for Oil and Gas Transmission Pipeline Engineering
• GB/T 50698 Standard for AC interference mitigation of buried steel pipelines
• GB/T 50811 Standard for the operation safety assessment of gas system
• GB/T 51241 Technical specifications for external anti-corrosion joints of pipelines
• GB/T 8163 Seamless steel pipes for liquid service
• 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
• GB/T 9124.1 Steel pipe flanges—Part 1：PN designated
• GB/T 9124.2 Steel pipe flanges—Part 2: Class designated
• GB/T 9125 Fasteners for pipe flange joints
• GB/T 9711 Steel pipes for oil and gas industry pipeline transportation systems*， 2023-11-27 Update
• GBZ/T 205 Specification of prevention and control on occupational hazards in confined space
• HG/T 20592 Steel pipe flanges(PN designated)
• HG/T 20606 Non-metallic flat gaskets for use with steel pipe flanges(PN designated)
• HG/T 20607 PTFE envelope gaskets for use with steel pipe flanges(PN designated)
• HG/T 20609 Metal jacketed gaskets for use with steel pipe flanges(PN designated)
• HG/T 20610 Spiral wound gaskets for use with steel pipe flanges(PN designated)
• HG/T 20611 Covered serrated metal gaskets for use with steel pipe flanges(PN designated)
• HG/T 20612 Metallic ring joint gaskets for use with steel pipe flanges(PN designated)
• HG/T 20613 Bolting for use with steel pipe flanges(PN designated)
• HG/T 20614 Specication for selection of steel pipe flanges,gaskets and bolting(PN designated)
• HG/T 20615 Steel pipe flanges(Class designated)
• HG/T 20623 Large diameter steel pipe flanges(Class designated)
• HG/T 20627 Non-metallic flat gaskets for use with steel pipe flanges(Class designated)
• HG/T 20628 PTFE envelope gaskets for use with steel pipe flanges(Class designated)
• HG/T 20630 Metal jacketed gaskets for use with steel pipe flanges(Class designated)
• HG/T 20631 Spiral wound gaskets for use with steel pipe flanges(Class designated)
• HG/T 20632 Covered serrated metal gaskets for use with steel pipe flanges(Class designated)
• HG/T 20633 Metallic ring joint gaskets for use with steel pipe flanges(Class designated)
• HG/T 20634 Bolting for use with steel pipe flanges(Class designated)
• HG/T 20635 Specification for selection of steel pipe flanges,gaskets and bolting(Class designated)
• HG/T 3707 Fittings of perforated steel skeleton polyethylene composit pipes for industry
• HG/T 3831 Spray polyurea for materials protection
• JB/T 3223 Rules of quality management of welding materials
• JGJ 111 Technical code for groundwater control in building and municipal engineering
• JGJ 120 Technical specification for retaining and protection of building foundation excavations
• NB/T 47013.2-2015 Nondestructive testing of pressure equipments.Part 2: Radiographic testing
• NB/T 47013.3-2015 Nondestructive testing of pressure equipments.Part 3: Ultrasonic testing
• NB/T 47013.4-2015 Nondestructive testing of pressure equipments.Part 4: Magnetic particle testing
• NB/T 47013.5-2015 Nondestructive testing of pressure equipments.Part 5: Penetrant testing
• NB/T 47013.7 Nondestructive testing of pressure equipments. Part 7:Visual examination
• NB/T 47013.8 Nondestructive testing of pressure equipments.Part 8:Leak Testing
• NB/T 47014 Welding procedure qualification for pressure equipment
• NB/T 47054 Integrated insulating joint
• SY/T 0087.1 Standard for corrosion evaluation of steel pipelines and storage tanks Part 1: Direct evaluation of external corrosion of buried steel pipelines
• SY/T 0096 Specification of impressed current deep anode beds
• SY/T 0315 Technological specification of external fusion bonded epoxy coating for steel pipeline
• SY/T 0407 Specification of steel surface preparation before application of paint
• SY/T 0447 Standard of coal tar epoxy coating for buried steel pipeline
• SY/T 0516 Technical specifications for insulating joints and insulating flanges
• SY/T 5257 Steel bends for oil and gas transmission
• SY/T 6784 Technical specification for corrosion control of steel storage tanks*， 2023-10-11 Update
• SY/T 6793 Code for design of oil and gas transportation pipeline hydraulic protection
• SY/T 7368 Technical specifications for anti-corrosion coating of pipelines passing through*， 2023-10-11 Update

GB/T 38942-2020 history

• 2020 GB/T 38942-2020 Pressure piping code—Utility piping