GB/T 18477.3-2019 Unplasticized polyvinyl chloride(PVC-U)structure wall pipeline system for underground soil waste and drainage—Part 3:Axial hollow-wall construction pipes

GB/T 18477.3-2009 Unplasticized polyvinyl chloride (PVC-U) structure wall pipeline system for underground soil waste and drainage—Part 3:Bilayer and hollow-wall construction with axial hollow pipes

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 6671-2001 Thermoplastics pipes-Determination of longitudinal reversion GB/T 19278-2018 General terms and their definitions of thermoplastic pipes,fittings and valves GB/T 20221-2006 Unplasticized poly(vinyl chloride)(PVC-U)pipes for non-pressure buried drainage and sewerage systems 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 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 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 9647-2003 Thermoplastics pipes—Determination of ring stiffness GB/T 9647-2015 Thermoplastics pipes—Determination of ring stiffness GB/T 14152-2001 Thermoplastics pipes—Determination of resistance to external blows—Round-the-clock method GB/T 18042-2000 Thermoplastics pipes—Determination of creep ratio GB/T 19471.1-2004 Plastics piping systems—Elastomeric-sealing-ring-type socket joints for use with unplasticized poly(vinyl chloride)(PVC-U)pipes—Test method for leaktighness under internal pressure and angular deflection GB/T 19471.2-2004 Plastics piping systems—Elastomeric-sealing-ring-type socket joints of unplasticized poly(vinyl chloride)(PVC-U)for use with PVC-U pipes—Test method for leaktightness under negative pressure GB/T 21873-2008 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials QB/T 2568-2002 Adhesive for solvent-based PVC-U plastic pipe system GB/T 8806-1988 Method for dimension measuring of plastic pipes GB/T 21873-2025 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials