CJ/T 470-2015 Pressure regulator for liquefied dimethyl ether cylinder

CJ/T 180-2014 Manually operated gas valves for gas installations of buildings GB/T 1239.2-2009 Cold coiled helical springs technical specifications—Part 2:Compressions spring 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 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2829-2002 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) 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 7144-1999 Colored cylinder mark for gases GB/T 7144-2016 Coloured cylinder mark for gases GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads 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 13808-1992 Wrought copper and copper alloys—Extruded rods and bars GB/T 13818-1992 Zinc die-casting alloys GB/T 13818-2009 Die casting zinc alloys GB/T 13818-2024 Die casting zinc alloys 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 25035-2010 Dimethyl ether for city gas 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 GB/T 2829-2025 Sampling procedures and tables for periodic inspection by attributes(Apply to inspection of process stability)