GB/T 35186-2025 Performance evaluation of measuring system for natural gas

GB/T 11062-1998 Natural gas—Calculation of calorific values, density, relative density and Wobbe index from composition GB/T 11062-2014 Natural gas—Calculation of calorific values,density,relative density and Wobbe index GB/T 11062-2020 Natural gas—Calculation of calorific values,density,relative density and Wobbe indices from composition GB/T 13609-1999 Natural gas—Sampling guidelines GB/T 13609-2012 Natural gas sampling guidelines GB/T 13609-2017 Natural gas sampling guidelines GB/T 13609-2025 Natural gas—Gas sampling GB/T 13610-2003 Analysis of natural gas by gas Chromatography GB/T 13610-2014 Analysis of natural gas composipion—Gas chromatography GB/T 13610-2020 Analysis of natural gas composition—Gas chromatography GB/T 17747.1-1999 Natural gas—Calculation of compression factor—Part 1:Introduction and guidelines GB/T 17747.1-2011 Natural gas—Calculation of compression factor—Part 1:Introduction and guidelines GB/T 17747.2-1999 Natural gas—Calculation of compression factor—Part 2:Calculation using molar-composition analysis GB/T 17747.2-2011 Natural gas—Calculation of compression factor—Part 2:Calculation using molar composition analysis GB/T 17747.3-1999 Natural gas—Calculation of compression factor—Part 3:Calculation using physical properties GB/T 17747.3-2011 Natural gas—Calculation of compression factor—Part 3:Calculation using physical properties GB/T 18603-2001 Technical requirements of measuring systems for natural gas GB/T 18603-2014 Technical requirements of measuring systems for natural gas GB/T 18603-2023 Technical requirements of measuring systems for natural gas GB/T 18604-2001 Measurement of natural gas flow by ultrasonic flow meter GB/T 18604-2014 Measurement of natural gas flow by gas ultrasonic flow meters GB/T 18604-2023 Measurement of natural gas flow by gas ultrasonic flow meters GB/T 21391-2008 Measurement of natural gas flow by turbine meters GB/T 21391-2022 Measurement of natural gas flow by turbine gas meters GB/T 21446-2008 Measurement of natural gas flow by means of standard orifice meter GB/T 21446-2025 Measurement of natural gas flow by means of standardized orifice meter GB/T 22723-2008 Energy determination for natural gas GB/T 22723-2024 Natural gas—Energy determination GB/T 27894.1-2011 Natural gas—Determination of composition with defined uncertainty by gas chromatogramphy—Part 1:Guidelines for tailored analysis GB/T 27894.1-2020 Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 1:General guidelines and calculation of composition GB/T 27894.2-2011 Natural gas—Determination of composition with defined uncertainty by gas chromatography—Part 2:Measuring-system characteristics and statistics for processing of data GB/T 27894.2-2020 Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 2:Uncertainty calculations GB/T 27894.3-2011 Natrual gas—Determination of composition with defined uncertainty by gas chromatography—Part 3:Determination of hydrogen,helium,oxyen,nitrogen,carbon dioxide and hydrocarbons up to C8 using two packed columns GB/T 27894.3-2023 Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 3:Precision and bias GB/T 27894.4-2012 Natural gas—Determination of composition with defined uncertainty by gas chromatography—Part 4:Determination of nitrogen,carbon dioxide and C1 to C5 and C+6 hydrocarbons for a laboratory and on-line measuring system using two columns GB/T 27894.5-2012 Natural gas—Determination of composition with defined uncertainty by gas chromatography—Part 5:Determination of nitrogen,carbon dioxideand C1 to C5 and C+6 hydrocarbons for a laboratory and on-line process application using three columns GB/T 27894.6-2012 Natural gas—Determination of composition with defined uncertainty by gas chromatography—Part 6:Determination of hydrogen helium oxygen nitrogen carbon dioxide and C1 to C8 hydrocarbons using three capillary columns GB/T 27894.7-2025 Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 7:Rapid determination of helium content using two packed columns GB/T 27894.8-2026 Natural gas—Determination of composition and associated uncertainty by gaschromatography—Part 8:Determination of hydrogen oxygen nitrogen carbonmonoxide carbon dioxide and C1 to C5 and C+6 hydrocarbons by micro-cellthermal conductivity detector GB/T 30490-2014 The method for automatic sampling of natural gas GB/T 30491.1-2014 Natural gas—Calculation of thermodynamic properties—Part 1:Gas phase properties for transmission and distribution applications GB/T 30491.2-2024 Natural gas—Calculation of thermodynamic properties—Part 2:Single-phase properties(gas,liquid,and dense fluid)for extended ranges of application GB/T 30500-2014 Ultrasonic gas flow meter performance online audit—Method using speed of sound checking GB/T 34166-2017 Measumement of natural gas flow by means of standard nozzle meters JJF 1059.1-2012 Evaluation and Expression of Uncertainty in Measurement JJF 1183-2007 Calibration Specification of the Temperature Transmitter JJF 1183-2025 Calibration Specification for Temperature Transmitters JJG 229-2010 Industry Platinum and Copper Resistance Thermometers JJG 229-1998 Verification Regulation of Industry Platinum Copper Resistance Thermometers JJG 633-2005 Gas Displacement Meters JJG 633-2024 Displacement Gas Meters JJG 640-2016 Differential Pressure Flowmeters JJG 640-1994 Verification Regulation of Differential Pressure Type Flowmeter JJG 700-1999 Gas Chromatograph JJG 700-2016 Gas Chromatographs JJG 882-2004 Pressure Transmitter JJG 882-2019 Pressure Transmitters JJG 1003-2016 Flow Integration Meters JJG 1030-2007 Ultrasonic Flowmeters JJG 1037-2008 Turbine Flowmeter JJG 1038-2008 Goriolis Mass Flow Meters JJG 1055-2009 On-line Gas Chromatograph JJG 1121-2015 Vortex Precession Flowmeters SY/T 6658-2021 Using a swirl-type vortex flow meter to measure natural gas flow SY/T 6658-2006 Using a swirl-type vortex flow meter to measure natural gas flow SY/T 6659-2016 Using a Coriolis mass flowmeter to measure natural gas flow rate SY/T 6659-2006 Measuring natural gas flow with a Coriolis mass flow meter SY/T 6660-2021 Measuring natural gas flow using a rotating volumetric gas flow meter SY/T 6660-2006 Measuring natural gas flow using a rotating volumetric gas flow meter SY/T 7551-2019 Measuring natural gas flow with a channel-type flow meter SY/T 7551-2004 The method for determining the pour point of crude oil SY/T 7704-2023 Measuring the heat of natural gas using visible light spectroscopy-ultrasonic correlation method