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

GB 5135.1-2003 Automatic sprinkler system—Part 1:Sprinkler GB 5135.2-2003 Automatic sprinkler system—Part 2:Wet system alarm valves、retard chamber、water motor alarm GB 5135.3-2003 Automatic sprinkler system—Part 3:Water mist nozzles GB 5135.4-2003 Automatic sprinkler system—Part 4:Dry pipe valves GB 5135.5-2003 Automatic sprinkler system—Part 5:Deluge alarm valves GB 5135.7-2003 Automatic sprinkler system—Part 7:Water flow indicator GB 5135.8-2003 Automatic sprinkler system—Part 8:Accelerator

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

GB/T 528-1998 Rubber,vulcanized or thermoplastic—Determination of tensile stress-strain properties GB/T 528-2009 Rubber,vulcanized or thermoplastic—Determination of tensile stress-strain properties GB/T 3287-2000 Malleable cast iron pipe fittings GB/T 3287-2011 Malleable cast iron pipe fittings GB 3452.1-1992 Fluid systems—Sealing devices—O-rings—Inside diameters, cross-sections, tolerances and size identification code GB/T 3452.1-2005 Fluid power systems—O-rings—Part 1:Inside diameters, cross-sections, tolerances and size identification code GB/T 3512-2001 Rubber, vulcanized or thermoplastic—Accelerated ageing and heat resistance tests—Air-oven method GB/T 3512-2014 Rubber, vulcanized or thermoplastic—Accelerated ageing and heat resistance tests—Air-oven method GB 5135.1-2003 Automatic sprinkler system—Part 1:Sprinkler GB 5135.1-2019 Automatic sprinkler system—Part 1:Sprinklers GB/T 5720-1993 Test methods for rubber O rings GB/T 5720-2008 Test methods for rubber O-rings GB/T 6031-1998 Rubber,vulcanized or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100IRHD) GB/T 6031-2017 Rubber,vulcanized or thermoplastic—Determination of hardness(hardness between 10 IRHD and 100 IRHD) GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the 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 12223-2005 Part-turn valve actuator attachments GB/T 12223-2023 Part-turn valve actuator attachments GB/T 3287-2024 Malleable cast iron pipe fittings