GB 8181-2005 Fire nozzles

GB 8181-1987 Performance requirements and tests methods for fire water branch

GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 1173-1995 Casting aluminium alloys GB/T 1173-2013 Casting aluminum alloy GB/T 1176-1987 Specification for cast copper alloys GB/T 1176-2013 Casting copper and copper alloys 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 12514-1990 Performance requirements and test methods for fire coupling GB 12514.1-2005 Fire coupling—Part 1:General technical conditions for fire coupling GB 12514.2-2006 Fire coupling—Part 2:Patterns and basic parameters for fire snap-types coupling GB 12514.3-2006 Fire coupling—Part 3:Patterns and basic parameters for fire insertion-type coupling GB 12514.4-2006 Fire coupling—Part 4:Patterns and basic parameters for fire screw-type coupling GB/T 15115-1994 Die casting aluminium alloys GB/T 15115-2009 Die casting aluminum alloys GB/T 15115-2024 Die casting aluminum alloys GB/T 15116-1994 Die casting copper alloys GB/T 15116-2023 Die casting copper alloys and copper alloys die castings GB 12514-2026 Technical specifications for fire couplings