GB 5135.6-2018 Automatic sprinkler system—Part 6:Conventional valves

GB 5135.5-2018 Automatic sprinkler systems—Part 5:Deluge alarm valves GB 5135.7-2018 Automatic sprinkler systems—Part 7:Water flow indicators GB 5135.9-2018 Automatic sprinkler system—Part 9:Early suppression fast response(ESFR) sprinklers

GB 5135.6-2003 Automatic sprinkler system—Part 6:Convention valve

GB/T 21873-2008 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials GB/T 25208-2010 Environmental test methods for fixed extinguishing systems GB/T 1047-1995 Nominal size for pipe components GB/T 1047-2005 Pipework components—Definition and selection of DN (nominal size) GB/T 1047-2019 Pipework components—Definition and selection of nominal size GB/T 1048-1990 Nominal pressure for pipe components GB/T 1048-2005 Pipework components—Definition and selection of PN GB/T 1048-2019 Pipework components—Definition and selection of nominal pressure GB/T 3737-2008 24°cone connectors—Union GB/T 3737.1-1983 Union—Assembly GB/T 3737.2-1983 Union—Body GB 5135.11-2006 Automatic sprinkler system—Part 11:Grooved couplings and fittings 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 9112-2000 Types and parameters for steel pipe flanges GB/T 9112-2010 Types and parameters for steel pipe flanges GB/T 9969-2008 General principles for preparation of instructions for use of industrial products GB 9969.1-1998 General principles for preparation of instructions for use of industrial products GB/T 12221-1989 Metal valves for use in flanged pipe systems—Face-to -face and centre-to-face dimensions GB/T 12221-2005 Metal valves—Face to face,end to end,center to face and center to end dimensions GB/T 17241.6-1998 Integral cast iron pipe flanges GB/T 17241.6-2008 Integral cast iron flanges CJ/T 216-2005 Resilient-seated gate valves for water supply and drainage service CJ/T 216-2013 Resilient-seated gate valves for water supply and drainage service GB/T 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions GB 5135.11-2025 Automatic sprinkler systems—Part 11:Grooved pipe couplings and fittings