GB/T 28185-2025 Heat exchange unit for urban heating

GB/T 28185-2011 Urban heating unit with heat exchanger

GB/T 17213.1-2015 Industrial-process control valves—Part 1:Control valve terminology and general considerations GB/T 17213.2-2005 Industrial-process control valves—Part 2-1:Flow capacity—Sizing equations for fluid flow under installed conditions GB/T 17213.2-2017 Industrial-process control valves—Part 2-1:Flow capacity—Sizing equations for fluid flow under installed conditions GB/T 17213.10-2005 Industrial-process control valves—Part 2-4:Flow capacity—Inherent flow characteristics and rangeability GB/T 17213.10-2015 Industrial-process control valves—Part 2-4:Flow capacity—Inherent flow characteristics and rangeability GB/T 17213.11-2005 Industrial-process control valves—Part 3-2:Dimensions—Face to face dimensions for rotary control valves except butterfly valves GB/T 17213.12-2005 Industrial-process control valves—Part 3-3:Dimensions—End-to-end dimensions for buttweld, two-way, globe-type, straight pattern control valves GB/T 17467-1998 High-voltage/low-voltage prefabricated substations GB/T 17467-2010 High-voltage/low-voltage prefabricated substation GB/T 17467-2020 High-voltage/low-voltage prefabricated substation GB/T 17794-1999 Preformed flexible elastomeric cellular thermal insulation GB/T 17794-2008 Preformed flexible elastomeric cellular thermal insulation GB/T 17794-2021 Preformed flexible elastomeric foam thermal insulation GB/T 18033-2000 Seamless copper tubes for water and gas GB/T 18033-2007 Seamless copper tubes for water and gas GB/T 18033-2017 Seamless copper tubes for water and gas GB/T 22239-2008 Information security technology—Baseline for classified protection of information system security GB/T 22239-2019 Information security technology—Baseline for classified protection of cybersecurity GB/T 28575-2012 Specification for YE3 Series(IP55)super-high efficiency three-phase induction motor(Frame size 80～355) GB/T 28575-2020 Specification for YE3 series(IP55) three-phase induction motors(Frame size 63~355) GB/T 29044-2012 Water quality for heating and air conditioning systems GB/T 32224-2020 Heat meters GB/T 34072-2017 Specification of temperature transmitter for internet of things GB/T 34073-2017 Specification of pressure transmitter for internet of things 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 38536-2020 Technical specification for the equipment of hot water heating substation GB 50015-2019 Standard for design of building water supply and drainage GB 50054-2011 Code for design of low voltage electrical installations GB 50057-2010 Code for design protection of structures against lightning GB/T 50063-2017 Code for design of electrical measuring device of power system GB 50126-2008 Code for construction of industrial equipment and pipeline insulation engineering GB 50217-2018 Standard for design of cables of electric power engineering GB 50236-2011 Code for construction and acceptance of field equipment, industrial pipe welding engineering GB 50264-2013 Code for design of industrial equipment and pipeline insulation engineering GB/T 50726 GB 51348-2019 Code for Electrical Design for Civil Building CJJ 28-2014 Code for construction and acceptance of city heating pipelines CJJ/T 34-2022 Design standard for urban heating network CJJ 88-2014 Technical specification for operation and maintenance of city heating system CJJ/T 247-2016 Technical specification for noise and vibration control of heating station CJ/T 467-2014 Semi-instantaneous water heater JB/T 7352-2010 Industrial process control valve JB/T 7352-1994 Industrial process control valve for electromagnetic valve JB/T 8937-2010 Check valve with snap-action design JB/T 8937-1999 Check valve with clamp mount NB/T 47004.1-2017 Plate Heat Exchanger Part 1: Removable Plate Heat Exchanger NB/T 47004.1-2025 Panel-type heat exchanger Part 1: Removable-type panel-type heat exchanger NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47013.3-2023 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing NB/T 47045-2015 Brazed plate heat exchanger NB/T 47045-2024 NB/T 47045-2024 Brazed plate heat exchanger QB/T 4008-2022 Polytetrafluoroethylene Unfused Tape for Thread Sealing (Raw Material Tape) QB/T 4008-2010 Thread seal tape (raw material tape) made of polytetrafluoroethylene SH/T 3022-2011 Design specification for anticorrosion coating of equipment and piping in petrochemical engineering