GB 5135.11-2025 Automatic sprinkler systems—Part 11:Grooved pipe couplings and fittings

GB 5135.2-2025 Automatic sprinkler system—Part 2:Wet system alarm valves,retard chamber, water motor alarm GB 5135.3-2025 Automatic sprinkler system—Part 3:Water spray nozzle GB 5135.4-2025 Automatic sprinkler system—Part 4:Dry pipe valves and accelerator GB 5135.21-2025 Automatic sprinkler system—Part 21:Inspector's test connection

GB 5135.11-2006 Automatic sprinkler system—Part 11:Grooved couplings and fittings

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 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature 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 531-1999 Rubber—Determination of indentation hardness by means of pocket hardness meters GB/T 531.1-2008 Rubber,vulcanized or thermoplastic—Determination of indentation hardness—Part 1:Duromerer method(Shore hardness) GB/T 531.2-2009 Rubber,vulcanized or thermoplastic—Determination of indentation hardness—Part 2:IRHD pocket meter method GB/T 1690-1992 Rubber, vulcanized-Determination of the effect of liquids GB/T 1690-2006 Rubber,vulcanized or thermoplastic—Determination of the effect of liquids GB/T 1690-2010 Rubber,vulcanized or thermoplastic—Determination of the effect of liquids GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs GB/T 3098.2-2000 Mechanical properties of fasteners—Nuts—Coarse thread GB/T 3098.2-2015 Mechanical properties of fasteners—Nuts GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts GB/T 3181-1995 Color standard for paint film GB/T 3181-2008 Colour standard for paint film 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 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 7759-1996 Rubber, Vulcanized or thermoplastic—Determination of compression set at ambient elevated or low temperatures GB/T 7759.1-2015 Rubber,vulcanized or thermoplastic—Determination of compression set—Part 1:At ambient or elevated temperatures GB/T 7759.2-2014 Rubber,vulcanized or thermoplastic—Determination of compression set—Part 2:At low temperatures GB/T 9124.1-2019 Steel pipe flanges—Part 1:PN designated 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