CJ/T 450-2014 Pneumatic gas/air ratio adjustment devices for gas-burning appliances

GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 1690-2010 Rubber,vulcanized or thermoplastic—Determination of the effect of liquids GB/T 3091-2001 Welded steel pipe for low pressure liquid delivery GB/T 3091-2008 Welded steel pipes for low pressure liquid delivery GB/T 3091-2015 Welded steel pipes for low pressure liquid delivery GB/T 3091-2025 Welded steel pipes for low pressure fluid delivery 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 5013.1-1997 Rubber insulated cables of rated voltages up to and including 450/750V—Part 1:General requirements GB/T 5013.1-2008 Rubber insulated cables of rated voltages up to and including 450/750 V—Part 1:General requirements GB 5023.1-1997 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V—Part 1:General requirements GB/T 5023.1-2008 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V—Part 1:General requirements GB/T 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 1:Parallel internal and taper external threads GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 2:Taper internal and external threads GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 9114-2000 Hubbed screwed steel pipe flanges with raised face GB/T 9114-2010 Hubbed screwed steel pipe flanges GB/T 9144-2003 General purpose metric screw threads—Preferable plan GB/T 9144-2025 General purpose metric screw threads—Preferable plan GB/T 12716-2002 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads GB/T 12716-2011 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads GB/T 13611-1992 Classification of town gas GB/T 13611-2006 Classification and essential property of city gas GB/T 13611-2018 Classification and basic characteristics of city gas GB/T 14536.1-2008 Automatic electrical controls for household and similar use—Part 1:General requirements GB 15092.1-2003 Switches for appliances Part 1:General requirements GB/T 15092.1-2010 Switches for appliances—Part 1:General requirements GB/T 15092.1-2020 Switches for appliances—Part 1:General requirements GB/T 15530.1-1995 Cast copper alloy integral flanges GB/T 15530.1-2008 Cast copper alloy integral flange GB/T 15530.2-1995 Copper alloy welding neck flanges GB/T 15530.3-1995 Copper alloy plate flanges for brazing or welding GB/T 15530.4-1995 Copper alloy hubbed slip-on flanges for brazing or welding GB/T 15530.4-2008 Copper alloy hubbed slip-on flange for brazing or welding GB/T 15530.5-1995 Loose plate steel flanges with copper alloy plate collar for brazing or welding GB/T 15530.5-2008 Loose plate flange in steel with a plate collar in copper alloy for brazing or welding GB/T 15530.6-1995 Loose plate steel flanges with copper alloy welding neck collar GB/T 15530.6-2008 Loose plate flange in steel with a copper pipe or a weld-neck collar in copper alloy for welding GB/T 15530.7-1995 Copper alloy blank flanges GB/T 15530.8-1995 Specifications for copper alloy and composite flanges GB/T 16411-2008 Universal test methods of gas burning appliances for domestic use GB/T 17241.1-1998 Synoptic table for cast iron pipe flanges GB/T 17241.1-2024 Cast iron pipe flanges—Part 1:PN designated GB/T 17241.2-1998 Cast iron pipe blank flanges GB/T 17241.2-2024 Cast iron pipe flanges—Part 2:Class designated GB/T 17241.3-1998 Hubbed threaded cast iron pipe flanges GB/T 17241.4-1998 Hubbed slip-on-welding and hubbed socket welding cast iron pipe flanges GB/T 17241.5-1998 Loose hubbed cast iron pipe flanges for lapped pipe end GB/T 17241.6-1998 Integral cast iron pipe flanges GB/T 17241.6-2008 Integral cast iron flanges GB/T 17241.7-1998 Specifications for cast iron pipe flanges CJ/T 222-2006 Quality assessment procedures and test rules for gas-burning appliances for domestic use

ISO 23551-3:2005