GA 821-2009 Water crane of fire

GA 113 GB/T 228-2002 Metallic materials—Tensile testing at ambient temperature 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 228.2-2015 Metallic materials—Tensile testing—Part 2:Method of test at elevated temperature GB/T 228.3-2019 Metallic materials—Tensile testing—Part 3:Method of test at low temperature GB/T 228.4-2019 Metallic materials—Tensile testing—Part 4:Method of test in liquid helium GB/T 1176-1987 Specification for cast copper alloys GB/T 1176-2013 Casting copper and copper alloys GB 4452-1996 General technical specification for hydrant GB 4452-2011 Outdoor fire hydrant GB 5135.6-2003 Automatic sprinkler system—Part 6:Convention valve GB 5135.6-2018 Automatic sprinkler system—Part 6:Conventional valves GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings GB 12514.1-2005 Fire coupling—Part 1:General technical conditions for fire coupling GB 4452-2026 Outdoor fire hydrant