T/CECS 10306-2023 Intelligent town gas pressure regulating installation

GB 3836.18-2010 Explosive atmospheres—Part 18:Intrinsically safe system GB/T 3836.18-2017 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB/T 3836.18-2024 Explosive atmospheres—Part 18:Intrinsically safe electrical systems GB 3836.19-2010 Explosive atmospheres—Part 19:Fieldbus intrinsically safe concept(FISCO) GB 3836.20-2010 Explosive atmospheres—Part 20:Equipment with equipment protection level (EPL) Ga GB/T 3836.21-2017 Explosive atmospheres—Part 21:Application of quality systems for equipment manufacture GB/T 3836.21-2022 Explosive atmospheres—Part 21:Application of quality management systemsfor Ex Product manufacture GB/T 3836.22-2017 Explosive atmospheres—Part 22:Protection of equipment and transmission system using optical radiation GB/T 3836.22-2023 Explosive atmospheres—Part 22:Protection of equipment and transmission system using optical radiation GB/T 3836.23-2017 Explosive atmospheres—Part 23:Group Ⅰ,category EPL Maequipment intended to remain functionalin atmospheres endangered by firedamp and/or coal dust GB/T 3836.24-2017 Explosive atmospheres—Part 24:Equipment protection by special protection“s” GB/T 3836.25-2019 Explosive atmospheres—Part 25:Requirements for process sealing between flammable process fluids and electrical systems GB/T 3836.26-2019 Explosive atmospheres—Part 26:Electrostatic hazards—Guidance GB/T 3836.27-2019 Explosive atmospheres—Part 27:Electrostatic hazards—Test GB/T 3836.28-2021 Explosive atmospheres—Part 28:Non-electrical equipment for explosive atmospheres—Basic method and requirements GB/T 3836.29-2021 Explosive atmospheres—Part 29:Non-electrical equipment for explosive atmospheres—Constructional safety “c”,control of ignition source “b”, liquid immersion “k” GB/T 3836.30-2021 Explosive atmospheres—Part 30:Equipment and components in explosive atmospheres in underground mines GB/T 3836.31-2021 Explosive atmospheres—Part 31:Equipment dust ignition protection by enclosure “t” GB/T 3836.32-2021 Explosive atmospheres—Part 32:Intrinsically safe systems with electronically controlled spark duration limitation GB/T 3836.33-2021 Explosive atmospheres—Part 33:Equipment in adverse service conditions GB/T 3836.34-2021 Explosive atmospheres—Part 34:Equipment assemblies GB/T 3836.35-2021 Explosive atmospheres—Part 35:Classification of areas for explosive dust atmospheres GB/T 3836.36-2022 Explosive atmospheres—Part 36:Electrical safety devices for the control of potential ignition sources from Ex Equipment GB/Z 3836.37-2025 Explosive atmospheres—Part 37:Equipment protection by 2-wire intrinsically safe ethernet concept (2-WISE) GB 4208-1993 Degrees of protection provided by enclosure (IP code) GB/T 4208-2008 Degrees of protection provided by enclosure(IP code) GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB 4943.1-2022 Audio/video,information and communication technology equipment—Part 1:Safety requirements GB 5310-1995 Seamless steel tubes and pipes for high pressure boiler GB/T 5310-2008 Seamless steel tubes and pipes for high pressure boiler GB/T 5310-2017 Seamless steel tubes and pipes for high pressure boiler GB/T 5310-2023 Seamless steel tubes and pipes for high pressure boiler GB 6479-2000 Seamless steel tubes for high-pressure for chemical fertilizer equipments GB/T 6479-2013 Seamless steel tubes for high-pressure chemical fertilizer equipments GB/T 8163-1999 Seamless steel tubes for liquid service GB/T 8163-2008 Seamless steel tubes for liquid service GB/T 8163-2018 Seamless steel pipes for liquid service GB 8624-1997 Classification on burning behaviors for building materials GB 8624-2006 Classification for burning behavior of building materials and products GB 8624-2012 Classification for burning behavior of building materials and products GB 8624-2025 Classification for burning behavior of building materials and products GB/T 9711-2011 Petroleum and natural gas industries—Steel pipe for pipeline transportation systems GB/T 9711-2017 Petroleum and natural gas industries—Steel pipe for pipeline transportation systems GB/T 9711-2023 Petroleum and natural gas industries—Steel pipe for pipeline transportation systems GB/T 9711.1-1997 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions—Part 1:Pipes of requirements class A GB/T 9711.2-1999 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions—Part 2:Pipes of requirement class B GB/T 9711.3-2005 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions—Part 3:Pipes of requirements class C GB 13955-1992 Installation and operation of residual current operated protective devices GB/T 13955-2005 Installation and operation of residual current operated protective devices GB/T 13955-2017 Installation and operation of residual current operated protective devices GB/T 14048.1-2000 Low-voltage switchgear and controlgear—General rules GB 14048.1-2006 Low-voltage switchgear and controlgear—Part 1:General rules GB/T 14048.1-2012 Low-voltage switchgear and controlgear—Part 1:General rules GB/T 14048.1-2023 Low-voltage switchgear and controlgear—Part 1:General rules GB/T 14976-2002 Stainless steel seamless tubes for fluid transport GB/T 14976-2012 Seamless stainless steel pipes for fluid transport GB/T 14976-2025 Seamless stainless steel pipes for fluid transport GB/T 17626.1-1998 Electromagnetic compatibility—Testing and measurement techniques—Overview of immunity tests GB/T 17626.1-2006 Electromagnetic compatibility—Testing and measurement techniques—Overview of immunity tests GB/Z 17626.1-2024 Electromagnetic compatibility—Testing and measurement techniques—Part 1:Overview of immunity tests GB/T 17626.2-1998 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.2-2006 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.2-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrostatic discharge immunity test GB/T 17626.3-1998 Electromagnetic compatibility—Testing and measurement techniques-Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.3-2006 Electromagnetic compatibility—Testing and measurement techniques—Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.3-2016 Electromagnetic compatibility—Testing and measurement techniques—Radiated,radio-frequency,electromagnetic field immunity test GB/T 17626.3-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 3:Radiated,radio-frequency,electromagnetic field immunity test GB/T 17626.4-1998 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test GB/T 17626.4-2008 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burst immunity test GB/T 17626.4-2018 Electromagnetic compatibility—Testing and measurement techniques—Electrical fast transient/burstimmunity test GB/T 17626.5-1999 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test GB/T 17626.5-2008 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test GB/T 17626.5-2019 Electromagnetic compatibility—Testing and measurement techniques—Surge immunity test GB/T 17626.6-1998 Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances, induced by radio-frequency fields GB/T 17626.6-2008 Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances,induced by radio-frequency fields GB/T 17626.6-2017 Electromagnetic compatibility—Testing and measurement techniques—Immunity to conducted disturbances,induced by radio-frequency fields GB/T 17626.7-1998 Electromagnetic compatibility—Testing and measurement techniques—General guide on harmonics and interharmonics measurements and instrumentation for power supply systems and equipment connected thereto GB/T 17626.7-2008 Electromagnetic compatibility—Testing and measurement techniques—General guide on harmonics and interharmonics measurements and instrumentation,for power supply systems and equipment connected thereto GB/T 17626.7-2017 Electromagnetic compatibility—Testing and measurement techniques—General guide on harmonics and interharmonics measurements and instrumentation,for power supply systems and equipment connected thereto GB/T 17626.8-1998 Electromagnetic compatibility—Testing and measurement techniques—Power frequency magnetic field immunity test GB/T 17626.8-2006 Electromagnetic compatibility—Testing and measurement techniques—Power frequency magnetic field immunity test GB/T 17626.9-1998 Electromagnetic compatibility Testing and measurement techniques Pulse magnetic field immunity test GB/T 17626.9-2011 Electromagnetic compatibility—Testing and measurement techniques—Pulse magnetic field immunity test GB/T 17626.9-2025 Electromagnetic compatibility—Testing and measurement techniques—Part 9:Impulse magnetic field immunity test GB/T 17626.10-1998 Electromagnetic compatibility—Testing and measurement techniques—Damped oscillatory magnetic field immunity test GB/T 17626.10-2017 Electromagnetic compatibility—Testing and measurement techniques—Damped oscillatory magnetic field immunity test GB/T 17626.11-1999 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips, short interruptions and voltage variations immunity tests GB/T 17626.11-2008 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips,short interruptions and voltage variations immunity tests GB/T 17626.11-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 11:Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current up to 16 A per phase GB/T 17626.12-1998 Electromagnetic compatibility—Testing and measurement techniques—Oscillatory waves immunity test GB/T 17626.12-2013 Electromagnetic compatibility—Testing and measurement techniques—Ring wave immunity test GB/T 17626.12-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 12:Ring wave immunity test GB/T 17626.13-2006 Electromagnetic compatibility—Testing and measurement techniques—Harmonics and interharmonics including mains signalling at a.c. power port,low frequency immunity test GB/T 17626.14-2005 Electromagnetic compatibility—Testing and measurement techniques—Voltage fluctuation immunity test GB/T 17626.15-2011 Electromagnetic compatibility—Testing and measurement techniques—Flickermeter—Functional and design specifications GB/T 17626.16-2007 Electromagnetic compatibility—Testing and measurement techniques—Test for immunity to conducted,common mode disturbances in the frequency range 0 Hz to 150 kHz GB/T 17626.17-2005 Electromagnetic Compatibility—Testing and measurement techniques—Ripple on d.c.input power port immunity test GB/T 17626.18-2016 Electromagnetic compatibility—Testing and measurement techniques—Damped oscillatory wave immunity test GB/T 17626.19-2022 Electromagnetic compatibility—Testing and measurement techniques—Part 19:Test for immunity to conducted,differential mode disturbances and signaling in the frequency range 2 kHz to 150 kHz at a.c. power ports GB/T 17626.20-2014 Electromagnetic compatibility—Testing and measurement techniques—Emission and immunity testing in transverse electromagnetic(TEM) waveguide GB/T 17626.21-2014 Electromagnetic compatibility—Testing and measurement techniques—Reverberation chamber test methods GB/T 17626.22-2017 Electromagnetic compatibility(EMC)—Testing and measurement techniques—Radiated emissions and immunity measurements in fully anechoic rooms(FARs) GB/T 17626.24-2012 Electromagnetic compatibility—Testing and measurement techniques—Test methods for protective devices for HEMP conducted disturbance GB/T 17626.27-2006 Electromagnetic compatibility—Testing and measurement techniques—Unbalance immunity test GB/T 17626.28-2006 Electromagnetic compatibility—Testing and measurement techniques—Variation of power frequency, immunity test GB/T 17626.29-2006 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips, short interruptions and voltage variations on d.c .input power port immunity tests GB/T 17626.30-2012 Electromagnetic compatibility—Testing and measurement techniques—Power quality measurement methods GB/T 17626.30-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 30:Power quality measurement methods GB/T 17626.31-2021 Electromagnetic compatibility—Testing and measurement techniques—Part 31:AC mains ports broadband conducted disturbance immunity test GB/Z 17626.32-2025 Electromagnetic compatibility—Testing and measurement techniques—Part 32:High-altitude electromagnetic pulse(HEMP) simulator compendium GB/Z 17626.33-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 33:Measurement methods for high-power transient parameters GB/T 17626.34-2012 Electromagnetic compatibility—Testing and measurement techniques—Voltage dips,short interruptions and voltage variations immunity tests for equipment with mains current more than 16 A per phase GB/Z 17626.35-2025 Electromagnetic compatibility—Testing and measurement techniques—Part 35:HPEM simulator compendium GB/T 17626.36-2024 Electromagnetic compatibility—Testing and measurement techniques—Part 36:Intentional electromagnetic interference immunity test methods for equipment and systems GB/T 17626.39-2023 Electromagnetic compatibility—Testing and measurement techniques—Part 39:Radiated fields in close proximity immunity test GB/Z 17626.40-2025 Electromagnetic compatibility—Testing and measurement techniques—Part 40:Digital methods for the measurement of power quantities of modulated or distorted signals 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 18940-2003 Measurement of gas flow in closed conduits—Turbine meters GB/T 20801.1-2006 Pressure piping code—Industrial piping—Part 1:General GB/T 20801.1-2020 Pressure piping code—Industrial piping—Part 1:General GB/T 20801.1-2025 Pressure piping code—Part 1:Industrial piping GB/T 20801.2-2006 Pressure piping code—Industrial piping—Part 2:Materials GB/T 20801.2-2020 Pressure piping code—Industrial piping—Part 2:Materials GB/T 20801.3-2006 Pressure piping code—Industrial piping—Part 3:Design and calculation GB/T 20801.3-2020 Pressure piping code—Industrial piping—Part 3:Design and calculation GB/T 20801.4-2006 Pressure piping code—Industrial piping—Part 4:Fabrication and assembly GB/T 20801.4-2020 Pressure piping code—Industrial piping—Part 4:Fabrication and assembly GB/T 20801.5-2006 Pressure piping code—Industrial piping—Part 5:Inspection and testing GB/T 20801.5-2020 Pressure piping code—Industrial piping—Part 5:Inspection and testing GB/T 20801.5-2025 Pressure piping code—Part 5:Hydrogen piping and pipelines GB/T 20801.6-2006 Pressure piping code—Industrial piping—Part 6:Safeguarding GB/T 20801.6-2020 Pressure piping code—Industrial piping—Part 6:Safeguarding GB/T 22239-2019 Information security technology—Baseline for classified protection of cybersecurity GB 27791-2020 City gas pressure regulating installation GB/T 32201-2015 Gas meters GB/T 35186-2017 Performance evaluation of measuring system for natural gas GB/T 35186-2025 Performance evaluation of measuring system for natural gas GB/T 36951-2018 Information security technology—Security technical requirements for application of sensing terminals in internet of things GB/T 37025-2018 Information security technology—Security technical requirements of data transmission for internet of things GB/T 37092-2018 Information security technology—Security requirements for cryptographic modules GB/T 37093-2018 Information security technology—Security requirements for IoT sensing layer access to communication network GB 50028-2006 Code for design of city gas engineering GB 50058-2014 Code for design of electrical installations in explosive atmospheres GB 50093-2013 Code for construction and quality acceptance of automation instrumentation engineering GB 50169-2016 Code for construction and acceptance of grounding connection electric equipment installation engineering GB 50257-2014 Electrical installation engineering Explosion and fire hazardous environment electrical installation construction and acceptance specifications GB 50316-2000 Design code for industrial metallic piping GB/T 50493-2019 Specification for design of combustible gas and toxic gas detection and alarm for petrochemical industry GB 50575-2010 Code for construction and acceptance of lkV and blow wiring work GB 55009-2021 Code for design of city gas engineering CJ/T 448-2014 Odorization unit for city gas CJJ/T 259-2016 Technical code for automatic system of city gas JB/T 2274-2014 Flow meter display device JB/T 2274-1991 Flow display instrument JB/T 7385-2015 Gas-type rotary vane flow meter JB/T 7385-1994 Gas-type diaphragm flow meter JJG 633-2005 Gas Displacement Meters JJG 633-2024 Displacement Gas Meters JJG 1003-2016 Flow Integration Meters JJG 1030-2007 Ultrasonic Flowmeters JJG 1037-2008 Turbine Flowmeter SH/T 3097-2017 Specification for design of static electricity earthing in petrochemical industry SY/T 6966-2023 Design specification for safety instrument system of pipeline transportation engineering SY/T 6966-2013 SY/T 6966-2013 Safety Instrumentation System Design Specification for Oil and Gas Pipeline Engineering。 TSG D0001-2009 Pressure Pipe Safety Technology Supervision Regulation for Industrial Pressure Pipe YD/T 1547-2019 WCDMA Digital Cellular Mobile Communication Network Terminal Equipment Technical Requirements (Third Stage) YD/T 1547-2009 Terminal equipment technical requirements for 2GHz WCDMA digital cellular mobile communication network (third phase) YD/T 1547-2007 2GHz WCDMA Digital Cellular Mobile Communication Network Terminal Equipment Technical Requirements (Second Stage) YD/T 1558-2013 Mobile station (including integrated device with terminal and card) for 800MHz/2GHz cdma2000 digital cellular telecommunications network equipment technical requirements YD/T 1558-2007 Mobile Station (MS) equipment technical requirements for 2GHz cdma2000 digital cellular mobile communication network: Mobile Station (MS) equipment technical requirements for 2GHz cdma2000 digital cellular mobile communication network: Mobile station equipment YD/T 2575-2016 TD-LTE Digital Cellular Mobile Communication Network Terminal Equipment Technical Requirements (Phase 1) YD/T 2575-2013 TD-LTE Digital Cellular Mobile Communication Network Terminal Equipment Technical Requirements (Phase 1) YD/T 2577-2013 LTE FDD Digital Cellular Mobile Communication Network Terminal Equipment Technical Requirements (Phase 1)