GB/T 19812.4-2018 Plastic equipment for water saving irrigation—Part 4:Polyethylene(PE)flexible 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 2918-2018 Plastics—Standard atmospheres for conditioning and testing GB/T 6111-2018 Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure GB/T 8804.3-2003 Thermoplastic pipes—Determination of tensile properties—Part 3:Polyolefin pipes GB/T 9573-2013 Rubber and plastics hoses and hose assemblies—Methods of measurement of the dimensions of hoses and the lengths of hose assemblies GB/T 13021-1991 Determination for the carbon black content of polyethylene pipes and fittings by calcination and pyrolysis GB/T 15560-1995 Standard test method for short-time hydraulic failure and resistance to constant internal pressure of the plastics pipes for the transport of fluids 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 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)