GB/T 15558.4-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 4:Valves

GB/T 15558.1-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 1:General GB/T 15558.2-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 2:Pipes GB/T 15558.3-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 3:Fittings GB/T 15558.5-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 5:Fitness for purpose of the system

GB/T 15558.3-2008 Buried polyethylene(PE)piping systems for the supply of gaseous fuels—Part 3:Valves

GB/T 15558.1-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 1:General GB/T 15558.2-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 2:Pipes GB/T 15558.3-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 3:Fittings GB/T 15558.5-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 5:Fitness for purpose of the system ISO 12176-5 GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2918-1998 Plastics—Standard atmospheres for conditioning and testing GB/T 2918-2018 Plastics—Standard atmospheres for conditioning and testing GB/T 3682.1-2018 Plastics—Determination of the melt mass-flow rate(MFR)and melt volume-flow rate(MVR)of thermoplastics—Part 1:Standard method GB/T 6111-2003 Thermoplastics pipes for the conveyance of fluids-Resistance to internal pressure—Test method GB/T 6111-2018 Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure GB/T 8806-2008 Plastics piping systems—Plastics components—Determination of dimensions GB/T 9345.1-2008 Plastics—Determination of ash—Part 1:General methods GB/T 13021-1991 Determination for the carbon black content of polyethylene pipes and fittings by calcination and pyrolysis GB/T 13021-2023 Polyolefin pipes and fittings—Determination of carbon black content—Test method of alcination and pyrolysis GB/T 18251-2000 Method for the assessment of pigment or carbon black dispersion in polyolefin pipes,fittings and compounds GB/T 18251-2019 Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes,fittings and compounds GB/T 19278-2003 General terms and their definitions of thermoplastic pipes, fittings and valves GB/T 19278-2018 General terms and their definitions of thermoplastic pipes,fittings and valves GB/T 19466.6-2009 Plastics—Differential scanning calorimetry(DSC)—Part 6:Determination of oxidation induction time(isothermal OIT)and oxidation induction temperature(dynamic OIT) GB/T 20674.4-2020 Plastics pipes and fittings—Equipment for fusion jointing polyethylene systems—Part 4:Traceability coding GB/T 23658-2009 Elastomeric seals—Material requirement for seals used in pipes and fittings carrying gaseous fuels and hydricarbon fluid GB/T 40919-2021 Polyethylene materials for piping systems—Determination of Strain Hardening Modulus in relation to slow crack growth GB/T 8806-1988 Method for dimension measuring of plastic pipes

ISO 4437-4:2022