GB/T 34530.1-2017 Valve for cryogenic insulated cylinder—Part 1:Pressure regulating valve

GB/T 34530.2-2017 Valve for cryogenic insulated cylinder—Part 2:Shut-off valve

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 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 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 12716-2002 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads GB/T 12716-2011 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on 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 JB/T 6896-2007 Air separation equipment surface cleanliness YS/T 482-2022 Copper and Copper Alloy Analysis Methods: Spark Discharge Atomic Emission Spectrometry