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

GB 5135.9-2006 Automatic sprinkler system—Part 9:Early suppression fast response(ESFR) automatic sprinklers GB 5135.10-2006 Automatic sprinkler system—Part 10:Pressure switch GB 5135.12-2006 Automatic sprinkler system—Part 12:Extended coverage sprinkler GB 5135.13-2006 Automatic sprinkler system—Part 13:Performance requirements and test methods of drencher nozzle

GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods 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 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 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/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 8262-1987 Bolts, round head with oval neck GB/T 191-2025 Graphical symbols marking for handling and storage of packages GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts