T/CHES 63-2022 Piston-type flow regulation and pressure control valve technical guidance

GB/T 1047-1995 Nominal size for pipe components GB/T 1047-2005 Pipework components—Definition and selection of DN (nominal size) GB/T 1047-2019 Pipework components—Definition and selection of nominal size GB/T 1048-1990 Nominal pressure for pipe components GB/T 1048-2005 Pipework components—Definition and selection of PN GB/T 1048-2019 Pipework components—Definition and selection of nominal pressure GB/T 3280-1992 Cold rolled stainless steel sheets and plates GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip GB/T 5210-1985 Determination of adhesion of coats—Pull-off test GB/T 5210-2006 Paints and varnishes—Pull-off test for adhesion GB/T 6739-1996 Determination of film hardness by pencil test GB/T 6739-2006 Paints and varnishes—Determination of film hardness by pencil test GB/T 6739-2022 Paints and varnishes—Determination of film hardness by pencil test GB/T 8923.1-2011 Preparation of steel substrates before application of paints and related products—Visual assessment of surface cleanliness—Part 1:Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings GB/T 9286-1998 Paints and varnishes—Cross cut test for films GB/T 9286-2021 Paints and varnishes—Cross-cut test GB/T 12221-1989 Metal valves for use in flanged pipe systems—Face-to -face and centre-to-face dimensions GB/T 12221-2005 Metal valves—Face to face,end to end,center to face and center to end dimensions GB/T 12225-1989 General purpose industrial valves—Specification of copper alloy castings GB/T 12225-2005 General purpose industrial valves—Specification of copper alloy castings GB/T 12225-2018 General purpose industrial valves—Specification of copper alloy castings GB/T 12227-1989 General purpose industrial valves—Specification of spheroidal graphite iron castings GB/T 12227-2005 General purpose industrial valves—Specification of spheroidal graphite iron castings GB/T 13927-1992 Pressure testing for general purpose valves GB/T 13927-2008 Industrial valves—Pressure testing GB/T 13927-2022 Industrial valves—Pressure testing GB/T 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system GB/T 17241.6-1998 Integral cast iron pipe flanges GB/T 17241.6-2008 Integral cast iron flanges GB/T 17241.7-1998 Specifications for cast iron pipe flanges GB/T 30832-2014 Valves—Test method of flow coefficient and flow resistance coefficient GB/T 32808-2016 Valves—Model designation method SL 176-2007 Rules for Quality Inspection and Evaluation of Hydraulic and Electrical Construction Work SL 176-1996 "Water Resources and Hydropower Engineering Construction Quality Evaluation Regulations (Trial)" SL 223-1999 Water Resources and Hydropower Construction Project Acceptance Regulations HG/T 3091 JB/T 8219-2016 General and intelligent electric actuators for industrial process control systems JB/T 8219-1999 Electric actuator for industrial process measurement and control system JB/T 13601-2018 JBT 13601-2018 Hydraulic Drive Device Technical Specification ISO 5211 ISA-RP 75.23-1995 BSEN 1982 GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system GB/T 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions GB/T 12227-2025 General purpose industrial valves—Technical specification for ductile iron castings SL/T 223-2025 Acceptance Regulations for Water Resources and Hydropower Construction Projects