GB 27790-2020
City gas pressure regulator (English Version)

Standard No.
GB 27790-2020
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 27790-2020
Replace
GB 27790-2011
Scope
This standard specifies the terms and definitions, symbols, classifications and markings, structures and materials, requirements, test methods, inspection rules, signs, labels, instructions for use and packaging of gas pressure regulators for urban gas (hereinafter referred to as pressure regulators). Transportation and storage. This standard applies to pressure regulators that regulate outlet pressure with an inlet pressure not greater than 10.0 MPa, an operating temperature range not exceeding -20°C to 60°C, and a lower limit not lower than the gas dew point temperature, and a nominal size not greater than 400mm. This standard does not apply to bottled liquefied petroleum gas pressure regulators and pressure regulators for dimethyl ether.

GB 27790-2020 Referenced Document

  • CJ/T 180-2014 Manually operated gas valves for gas installations of buildings
  • CJ/T 335-2010 Slam-shut valves and relief valves for city gas
  • GB 50058 Code for design of electrical installations in explosive atmospheres
  • GB/T 1047 Pipework components—Definition and selection of nominal size
  • GB/T 1173 Casting aluminum alloy
  • GB/T 1220 Stainless steel bars
  • GB/T 12224 General requirements for industrial steel valves
  • GB/T 12227 General purpose industrial valves.Specification of spheroidal graphite iron castings
  • GB/T 12228 General purpose industrial valves.Specification of carbon steel forgings
  • GB/T 12229 General Purpose industrial valves.Specification of carbon steel castings
  • GB/T 1239.2 Cold coiled helical springs technical specifications.Part 2:Compressions spring
  • GB/T 13306 Plates
  • GB/T 13384 General specifications for packing of mechanical and electrical product
  • GB/T 1348 Spheroidal graphite iron castings
  • GB/T 13934 Rubber vulcanized or thermoplastic Determination of flex cracking and crack growth (De mattia)
  • GB/T 15115 Die casting aluminum alloys
  • GB/T 1591 High strength low alloy structural steels
  • GB/T 1681 Rubber.Determination of rebound resilience of vulcanizates
  • GB/T 1682 Rubber,vulcanized.Determination of low-temperature brittleness.Single test piece method
  • GB/T 1690 Rubber,vulcanized or thermoplastic.Determination of the effect of liquids
  • GB/T 17213.15 Industrial-process control valves—Part 8-3: Noise considerations—Control valve aerodynamic noise prediction method
  • GB/T 191 Packaging.Pictorial marking for handling of goods
  • GB/T 20801.5 Pressure piping code—Industrial piping—Part 5:Inspection and testing*， 2020-11-19 Update
  • GB/T 229 Metallic materials—Charpy pendulum impact test method
  • GB/T 23934 Hot formed helical compression springs—Technical requirement
  • GB/T 3077 Alloy structure steels
  • GB/T 3191 Extrusion rods and bars of aluminium and aluminium alloys
  • GB/T 32249 General specifications for aluminum and aluminum alloy die forgings, free forgings and rolled ring forgings
  • GB/T 3280 Cold rolled stainless steel plate, sheet and strip
  • GB/T 3452.1 Fluid power systems-O-rings-Part 1:Inside diameters,cross-sections,tolerances and size identification code
  • GB/T 3452.2 Fluid power systems.O-riings.Part 2:Quality acceptance criteria
  • GB/T 3512 Rubber, vulcanized or thermoplastic.Accelerated ageing and heat resistance tests.Air-oven method
  • GB/T 38343 Technical specification for flange joints installation
  • GB/T 4423 Copper and copper alloy cold-drawn rod and bar
  • GB/T 528 Rubber,vulcanized or thermoplastic.Determination of tensile stress-strain properties
  • GB/T 531.1 Rubber,vulcanized or thermoplastic.Determination of indentation hardness.Part 1:Duromerer method( Shore hardness)
  • GB/T 6388 Transport package shipping mark
  • GB/T 699 Quality carbon structure steels
  • GB/T 7233.1 Ultrasonic testing of steel castings - Part 1: General purpose steel castings*， 2023-03-17 Update
  • GB/T 7762 Rubber, vulcanized or thermoplastic.Resistance to ozone cracking.Static strain testing
  • GB/T 9124.1 Steel pipe flanges—Part 1：PN designated
  • GB/T 9124.2 Steel pipe flanges—Part 2: Class designated
  • GB/T 9440 Malleable iron castings
  • GB/T 9443 Steel and iron castings—Liquid penetrant inspection
  • GB/T 9444 Steel and iron castings—Magnetic particle inspection
  • GB/T 9969 General principles for preparation of instructions for use of industrial products
  • HG/T 20592 Steel pipe flanges(PN designated)
  • HG/T 20615 Steel pipe flanges(Class designated)
  • JB/T 6440 Methods of radiographic examination for steel castings valves
  • JB/T 7248 Technical specification for low temperature service steel casting for valves
  • JB/T 7927 Valve cast steel visual quality requirements
  • JB/T 7944 Coiled helical springs.Sampling in spection
  • NB/T 47008 Carbon steel and alloy steel forgings for pressure equipment
  • NB/T 47009 Alloy steel forgings for low temperature pressure equipment
  • NB/T 47010 Stainless steel and heat-resistant steel forgings for pressure equipment
  • NB/T 47013 Interpretation of "Nondestructive Testing of Pressure Equipment" Standard

GB 27790-2020 history

City gas pressure regulator


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