DB31/T 1162-2019 Periodical inspection technical regulation for gas supply polyethylene pipe

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 8804.3-2003 Thermoplastic pipes—Determination of tensile properties—Part 3:Polyolefin pipes GB/T 18476-2001 Polyolefin pipes for the conveyance of fluids—Determination of resistance to crack propagation-Test method for slow crack growth on notched pipes(notch test) GB/T 18476-2019 Polyolefin pipes for the conveyance of fluids—Determination of resistance to crack propagation—Test method for slow crack growth(notch test) GB 15558.1-1995 Buried polyethylene (PE) pipes for the supply of gaseous fuels GB 15558.1-2003 Buried Polyethylene(PE)piping systems for the supply of gaseous fuels—Part 1:Pipes GB/T 15558.1-2015 Buried polyethylene(PE)piping systems for the supply of gaseous fuels—Part 1:Pipes GB/T 15558.1-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 1:General GB 15558.2-1995 Buried polyethylene (PE) fittings for the supply of gaseous fuels GB/T 15558.2-2005 Buried polyethylene (PE) piping systems for the supply of gaseous fuels—Part 2:Fittings GB/T 15558.2-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 2:Pipes GB/T 15558.3-2008 Buried polyethylene(PE)piping systems for the supply of gaseous fuels—Part 3:Valves GB/T 15558.3-2023 Buried polyethylene(PE) piping systems for the supply of gaseous fuels—Part 3:Fittings GB/T 19285-2014 Inspection of corrosion protection for buried steel pipelines 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 27512-2011 Risk assessment for buried steel pipeline CJJ 33 JB/T 10662-2013 Ultrasonic testing of welds in polyethylene pipelines for non-destructive testing JB/T 10662-2006 Non-destructive testing and ultrasonic testing of welds in polyethylene pipes DB31/T 1058 GB 50028-2006 Code for design of city gas engineering CJJ 63-2018 Technical standard for polyethylene(PE) gaseous fuel pipeline engineering TSG D2002-2006 Regulation on Welding Technology for Gas Supply Polyethylene Pipe TSG D7004-2010 Periodical Inspection Regulation for City Gas Pressure Pipeline and Thermal Pressure Pipeline TSG D7005-2018 Periodic Inspection Regulation for Industrial Pressure Piping GB/T 27512-2025 Risk assessment method for buried pipelines