GB/T 19812.2-2005 Plastic equipment for water saving irrigation—Pressure compensating emitter and emitting pipe

GB/T 19812.1-2005 Plastic equipment for water saving irrigation—Drip tape with labyrinth on one side

GB/T 19812.2-2017 Plastic equipment for water saving irrigation—Part 2:Pressure compensating emitter and emitting pipe

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 8804.3-2003 Thermoplastic pipes—Determination of tensile properties—Part 3:Polyolefin pipes GB/T 8806-2008 Plastics piping systems—Plastics components—Determination of dimensions 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 15819-1995 Test method and specifications of susceptibility for environmental stress-cracking induced by insert-type fittings in low density polyethylene (PE)25 pipes for irrigation laterals GB/T 15819-2006 Polyethylene (PE) pipes for irrigation laterals—Test method and specification of susceptibility to environmental stress cracking induced by insert-type fittings GB/T 16422.2-1999 Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon—arc sources GB/T 16422.2-2014 Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon-arc sources GB/T 16422.2-2022 Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon-arc lamps GB/T 17187-1997 Agricultural irrigation equipment—Emitter—Specification and test methods GB/T 17187-2009 Agricultural irrigation equipment—Emitters and emitting pipe—Specification and test methods GB/T 17188-1997 Agricultural irrigation equipment—Emitting-pipe systems—Specification and test methods 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 8806-1988 Method for dimension measuring of plastic pipes