HG/T 2434-2005 Specifications for glass-lined valve

HG/T 2434-2012 Glazed Glass-lined Valve Technical Specification

GB/T 12220-1989 General purpose industrial valves—Marking GB/T 12220-2015 Industrial valves—Marking 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 12226-1989 General purpose industrial valves—Specification of flake graphite iron castings GB/T 12226-2005 General purpose industrial valves—Specification of flake graphite iron castings GB/T 12229-1989 General purpose industrial valves—Specification of carbon steel castings GB/T 12229-2005 General purpose industrial valves—Specification of carbon steel 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 5117-1995 Carbon steel covered electrodes GB/T 5117-2012 Covered electrodes for manual metal arc welding of non-alloy and fine grain steels GB/T 7991-2003 Measurement of vitreous and porcelain enamel coating thickness—Magnetic method GB/T 7991.1-2021 Test method of viterous and porcelain enamels—Part 1:Determination of resistance to alkaline liquids GB/T 7991.3-2021 Test method of viterous and porcelain enamels—Part 3:Determination of resistance to thermal shock GB/T 7991.4-2019 Test method of viterous and porcelain enamels—Part 4:Determination of resistance to impact GB/T 7991.5-2014 Test method of viterous and porcelain enamels—Part 5:Determination of thickness by electromagnetic method GB/T 7991.6-2014 Test method of viterous and porcelain enamels—Part 6:High voltage test GB/T 7991.7-2019 Test method of viterous and porcelain enamels—Part 7:Determination of coefficient of mean lincar thermal expansion GB/T 7991.9-2014 Test method of viterous and porcelain enamels—Part 9:Determination of adhesion tensile strength GB/T 7991.10-2014 Test method of viterous and porcelain enamels—Part 10:Determination of lead and cadmium release GB/T 7991.10-2024 Test method of viterous and porcelain enamels—Part 10:Determination of dissol-ution of heavy metal ions from enamelled articles used for preparation and storage of food and limits GB/T 7993-2003 Vitreous and porcelain enamel—Enamelled articles for service under highly corrosive conditions—High voltage test GB/T 9439-1988 Grey iron castings GB/T 9439-2010 Grey iron castings GB/T 9439-2023 Grey iron castings HG 20592 HG 2432-2001 Glazed glass equipment technical specification JB/T 7927-2014 The appearance quality requirements for valve cast steel components JB/T 7927-1999 The appearance quality requirements for valve cast steel parts JB/T 7928-2014 Industrial Valve Supply Requirements JB/T 7928-1999 JBT 7928-1999 General valve Supply requirements GB/T 7991.6-2025 Test method of viterous and porcelain enamels—Part 6:High voltage test GB/T 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions GB/T 12226-2025 General purpose industrial valves—Technical specification for gray iron castings GB/T 12229-2025 General purpose industrial valves—Technical specification for carbon steel castings