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

GB/T 19812.1-2017 Plastic equipment for water saving irrigation—Part 1:Drip tape with labyrinth on one side GB/T 19812.3-2017 Plastic equipment for water saving irrigation—Part 3:Drip pipe and drip tape inlaid with emitters inside

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

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 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 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 16422.2-2014 Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon-arc sources GB/T 17187-2009 Agricultural irrigation equipment—Emitters and emitting pipe—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 19278-2003 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 19812.1-2017 Plastic equipment for water saving irrigation—Part 1:Drip tape with labyrinth on one side SL 571-2013 Testing methods for hydraulic parameters of water-saving irrigation equipment