GB/T 34527-2017 Specification of gas cylinder valve for air rebreather

GB/T 196-2003 General purpose metric screw threads—Basic dimensions GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances 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 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 3934-2003 Specification of gauges for general purpose screw threads GB/T 4423-1992 Wrought copper and copper alloys—Drawn rods and bars GB/T 4423-2007 Copper and copper-alloy cold-drawn rod and bar GB/T 4423-2020 Copper and copper alloy cold-drawn rod and bar GB/T 5121.1-1996 Copper and copper alloys—Determination of copper content GB/T 5121.1-2008 Methods for chemical analysis of copper and copper alloys—Part 1:Determination of copper content GB/T 5121.3-1996 Copper and copper alloys—Determination of lead content GB/T 5121.3-2008 Methods for chemical analysis of copper and copper alloys—Part 3:Determination of lead content GB/T 5121.9-1996 Copper and copper alloys—Determination of iron content GB/T 5121.9-2008 Methods for chemical analysis of copper and copper alloys—Part 9:Determination of iron content GB/T 5231-2001 Wrought copper and copper alloys chemical composition limits and forms of wrought products GB/T 5231-2012 Designation and chemical composition of wrought copper and copper alloys GB/T 5231-2022 Designation and chemical composition of wrought copper and copper alloys GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 10567.2-1997 Wrought copper and copper alloys—Detection of residual stress—Ammonia test GB/T 10567.2-2007 Wrought copper and copper alloys—Detection of residual stress—Ammonia test GB/T 10922-2006 Gauges for pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads GB/T 13005-1991 Terminology of gas cylinders GB/T 13005-2011 Terminology of gas cylinders GB 15382-1994 General technique specifications for cylinder valves GB/T 15382-2009 General specifications of gas cylinder valves GB/T 15382-2021 General specifications of gas cylinder valves YS/T 482-2005 Methods for analysis of copper and copper alloys—The atomic emission spectrometry YS/T 482-2022 Copper and Copper Alloy Analysis Methods: Spark Discharge Atomic Emission Spectrometry GB/T 196-2025 General purpose metric screw threads—Basic dimensions GB/T 3934-2025 Specification of gauges for general purpose screw threads GB/T 10922-2025 Gauges for pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads