GB/T 29046-2023 Detection methods of technical specification for pre-insulated district heating pipes

GB/T 29046-2012 Test methods of technical specification for pre-insulated directly buried district heating pipes

GB/T 14402-1993 Test method of heat of combustion for building materials GB/T 14402-2007 Reaction to fire tests for building materials and products—Determination of the heat of combustion GB/T 14402-2026 Reaction to fire tests for building materials and products—Determination of the heat of combustion 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 16400-1996 Aluminium silicate wool and their products for thermal insulation GB/T 16400-2003 Aluminium silicate wool and it's products for thermal insulation GB/T 16400-2015 Aluminium silicate wool and it's products for thermal insulation GB/T 16400-2023 Aluminosilicate wool and it’s products for thermal insulation GB/T 17146-1997 Test methods for water vapour transmission of building materials GB/T 17146-2015 Test methods for water vapour transmission properties of building materials and products GB/T 17391-1998 Test method for thermal stability of polyethylene pipes and fittings GB/T 17393-1998 Standard specification of thermal insulation materials for use over austenitic stainless steel GB/T 17393-2008 Specification for thermal insulation for use in contact with austenitic stainless steel GB/T 17430-1998 Estimating the maximum use temperature of thermal insulation GB/T 17430-2015 Estimating the maximum service temperature of thermal insulation GB/T 17911-2006 Refractory products—Methods of test for ceramic fibre products GB/T 17911-2018 Methods of test for refractory fibre products GB/T 17911.1-1999 Refractory ceramic fibre products—Preparation of test pieces GB/T 17911.2-1999 Refractory ceramic fibre products—Determination of thickness GB/T 17911.3-1999 Refractory ceramic fibre products—Determination of bulk density GB/T 17911.4-1999 Refractory ceramic fibre products—Determination of permanent linear change on heating GB/T 17911.5-1999 Refractory ceramic fibre products—Determination of tensile strength GB/T 17911.6-1999 Refractory ceramic fibre products—Determination of shot content GB/T 17911.7-2000 Refractory ceramic fibre products—Determination of resilience GB/T 17911.8-2002 Refractory ceramic fibre products—Determination of thermal conductivity GB/T 17794-2021 Preformed flexible elastomeric foam thermal insulation 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 18252-2000 Plastics piping and ducting systems—Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation GB/T 18252-2008 Plastics piping and ducting systems—Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation GB/T 18252-2020 Plastics piping and ducting systems—Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation GB/T 18369-2001 Glass fiber roving GB/T 18369-2008 Glass fiber roving GB/T 18369-2022 Glass fiber roving GB/T 18370-2001 Glass fibre woven roving GB/T 18370-2014 Glass fibre woven roving GB/T 18475-2001 Thermoplastics materials for pipes and fittings for pressure applications—Classification and designation—Overall Service(design) coefficient GB/T 19285-2003 Inspection of corrosion protection for buried steel pipelines GB/T 19285-2014 Inspection of corrosion protection for buried steel pipelines GB/T 19285-2026 Inspection of corrosion protection for buried steel pipelines GB/T 20313-2006 Hygrothermal performance of building materials and products—Determination of moisture content by drying at elevated temperature GB/T 23257-2009 Polyethylene coating for buried steel pipeline GB/T 23257-2017 Polyethylene coating for buried steel pipeline GB/T 27418-2017 Guide to the evaluation and expression of uncertainty in measurement GB/T 30806-2014 Thermal insulating products for building applications—Determination of dimensional stability under specified temperature and humidity comditions GB/T 32064-2015 Determination of thermal conductivity and thermal diffusivity of building materials:transient plane heat source method GB/T 32682-2016 Plastics—Determination of environment stress cracking(ESC) of polyethylene—Full-notch creep test(FNCT) GB/T 33061.1-2016 Plastics—Determination of dynamic mechanical properties—Part 1:General principles GB/T 33061.1-2025 Plastics—Determination of dynamic mechanical properties—Part 1:General principles GB/T 34336-2017 Reinforced nanoporous aerogel products for thermal insulation GB/T 35842-2018 Technical requirements for pre-insulated directly buried valve of urban heating GB/T 35842-2026 Technical requirements for pre-insulated directly buriedvalve of urban heating GB/T 37263-2018 Prefabricated directly buried insulating plastic-steel-plastic composite pipes with polyurethane(PUR) foamed-plastics and high density polyethylene(PE) casing pipes GB/T 37827-2019 Welded ball valve for urban heating GB/T 37828-2019 Bidirectional metal to metal sealed butterfly valve for urban heating GB/T 40402-2021 Pre-insulated composite plastic pipes with polyethylene casing GB/T 50123-2019 Standard for geotechnical testing method GB 50683-2011 Code for acceptance of field equipmemt,industrial pipe welding construction quality HG/T 20273-2011 Technical code for coating engineering of sparying polyurea protection materials JC/T 618-2019 Chemical analysis methods for solutes such as chloride, fluoride, silicate, and sodium in insulation materials JC/T 618-2005 Chemical analysis methods for solutes containing chloride, fluoride, silicate, and sodium in thermal insulation materials JC/T 647-2014 Fiber-reinforced plastic insulation products JC/T 647-2005 Foam Glass Insulation Product NB/T 47013.1-2015 Non-destructive testing of pressure equipment - Part 1: General requirements NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47013.3-2015 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing SY/T 0315-2013 Steel pipe fusion-bonded epoxy powder coating technical specification SY/T 0315-2005 The technical specifications for a single-layer molten weld epoxy coating applied to steel pipes SY/T 0315-1997 Steel pipe welding epoxy powder coating technology standard SY/T 5037-2023 Underground arc welding steel pipe for general fluid conveyance pipeline SY/T 5037-2018 Underground arc welding steel pipe for general fluid conveyance pipeline SY/T 5037-2012 Submerged arc welded steel pipe for general fluid conveying pipelines SY/T 5037-2000 SY/T 5037-2000 Screw-Gap Soldering Steel Pipe for Low-Pressure Pipeline Transportation System SY 5257-1991 Steel Bending Pipe SY/T 5257-2012 Steel Induction Heating Bending Tubes for Oil and Gas Transportation SY/T 5257-2004 Steel bends for oil and gas transportation