CJ/T 502-2016 Brass fittings for press joint

GB/T 1176-2013 Casting copper and copper alloys GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 2040-2008 Sheet of copper and copper alloy GB/T 2059-2008 Strip of copper and copper alloy GB/T 18033-2007 Seamless copper tubes for water and gas GB/T 21873-2008 Rubber seals—Joint rings for water supply,drainage and sewerage pipelines—Specification for materials GB/T 27572-2011 Rubber seals—Joint rings for pipelines for hot-water supply up to 110 ℃—Specification for the materials YS/T 649-2007 Extruded rod and bar of copper and copper alloys 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 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 1:Parallel internal and taper external threads GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads—Part 2:Taper internal and external threads 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 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system