GB/T 44574-2024 Plastic check valves for anti-pollution for discharge piping systems inside buildings

GB/T 1033.1-2008 Plastics—Methods for determining the density of non-cellular plastics—Part 1:Immersion method,liquid pyknometer method and titration method GB/T 1040.2-2006 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1040.2-2022 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1633-2000 Plastics—Thermoplastic materials—Determination of Vicat softening temperature(VST) 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 5761-1993 Suspension polyvinyl chloride resins of general purpose GB/T 5761-2006 Suspension polyvinyl chloride resins of general purpose GB/T 5761-2018 Suspension polyvinyl chloride resins of general purpose GB/T 8801-2007 Test method for unplasticized polyvinyl chloride(PVC-U)fittings by falling GB/T 8802-2001 Thermoplastics pipes and fitting-Determination of vicat softening temperature GB/T 8803-2001 Injection-moulded unplasticized poly(vinyl chloride)(PVC-U),chlorinated poly(vinyl chloride)(PVC-C),acrylonitrile butadiene-styrene(ABS)and acrylonitrile-styrene-acrylester(ASA)fittings—Hot oven test method GB/T 8806-2008 Plastics piping systems—Plastics components—Determination of dimensions GB/T 10002.1-2023 Unplasticized poly (vinyl chloride) (PVC-U) pipes for water supply 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 26125-2011 Electrical and electronic products—Determination of six regulated substances(lead,mercury,cadmium,hexavalent chromium,polybrominated biphenyls,polybrominated diphenyl ethers) GB/T 8806-1988 Method for dimension measuring of plastic pipes GB/T 1633-2025 Plastics—Thermoplastic materials—Determination of Vicat softerning temperature(VST)