GB/T 24925-2019 Low temperature valve—Technical specifications

GB/T 24925-2010 Cryogenic valve technical specifications

GB/T 229-1994 Metallic materials—Charpy notch impact test GB/T 229-2007 Metallic materials—Charpy pendulum impact test method GB/T 229-2020 Metallic materials—Charpy pendulum impact test method GB/T 9113-2010 Integral steel pipe flanges GB/T 9113.1-2000 Integral steel pipe flanges with flat face or raised face GB/T 9113.2-2000 Integral steel pipe flanges with male and female face GB/T 9113.3-2000 Integral steel pipe flanges with tongue and groove face GB/T 9113.4-2000 Integral steel pipe flanges with ring-joint face 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 12221-2025 Metal valves—Face to face,end to end,centre to face and centre to end dimensions GB/T 12222-2005 Multi-turn valve actuator attachments GB/T 12222-2023 Multi-turn valve actuator attachments GB/T 12223-2005 Part-turn valve actuator attachments GB/T 12223-2023 Part-turn valve actuator attachments GB/T 12224-1989 General requirements for industrial steel valves GB/T 12224-2005 General requirements for industrial steel valves GB/T 12224-2015 General requirements for industrial steel valves 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 12234-1989 General purpose industrial valves—Flanged and butt-weld steel gate valves GB/T 12234-2007 Bolted bonnet steel gate valves for petroleum and natural gas industries GB/T 12234-2019 Bolted bonnet steel gate valves for petroleum and natural gas industries GB/T 12235-1989 General purpose industrial valves—Flanged steel globe valves and lift check valves GB/T 12235-2007 Steel globe valves and lift check valve for petroleum,petrochemical and allied industries GB/T 12235-2025 Steel globe valves and lift check valve for petroleum,petrochemical and allied industries GB/T 12236-1989 General purpose industrial valves—Steel swing check valves GB/T 12236-2008 Steel swing check valve for petroleum,petrochemical and allied industries GB/T 12236-2025 Steel swing check valve for petroleum,petrochemical and allied industries GB/T 12237-1989 General purpose industrial valves—Flanged and butt-weld end steel ball valves GB/T 12237-2007 Steel ball valves for petroleum,petrochemical and allied industries GB/T 12237-2021 Steel ball valves for petroleum, petrochemical and allied industries GB/T 12238-1989 General purpose industrial valves—Flanged and wafer butterfly valves GB/T 12238-2008 Flanged and wafer resilient seal butterfly valves GB/T 13402-1992 Large-diameter carbon steel pipe flanges GB/T 13402-2010 Large diameter steel pipe flanges GB/T 13402-2019 Large diameter steel pipe flanges GB/T 21387-2008 Axial flow check valve GB/T 21387-2025 Axial flow check valve for water supply system GB/T 22652-2008 Overlaying-welding procedure qualification for valves sealing face GB/T 22652-2019 Overlaying-welding procedure qualification for valves sealing face GB/T 26479-2011 Fire test for soft-seated quarter-turn valves GB/T 26480-2011 Valve inspection and testing GB/T 26482-2011 Fire type-testing requirement for check valves GB/T 26640-2011 Specification for minimal thickness of the shell of valves GB/T 28776-2012 Steel gate,globe and check valve for the petroleum and natural gas industries(for sizes DN100 and smaller) JB/T 6438-2011 The technical requirements for plasma arc welding of valve seals JB/T 6438-1992 JB/T 6438-1992 Sealing surface plasma arc welding technical requirements for valves JB/T 6439-2008 Valve pressure parts are inspected by magnetic particle testing JB/T 6440-2008 The valve is subjected to radiographic inspection of the pressure die-cast steel component JB/T 6903-2008 JB/T 7248-2008 Low-temperature Steel Casting for Valve Components Technical Specification JB/T 7248-2024 The technical specifications for low-temperature steel castings used in valves JB/T 7248-1994 The technical specification for low-temperature steel castings used in valves JB/T 7746-2020 Compact forged steel valve JB/T 7746-2006 Compact steel valve JB/T 7746-1995 Shrink-diameter forged steel valve 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 JB/T 8527-2015 Metal Sealing Butterfly Valve JB/T 8527-1997 Metal Sealing Butterfly Valve JB/T 12003-2014 Valve low-temperature testing equipment specification JB/T 12622-2016 JBT 12622-2016 Liquefied Natural Gas Valves Performance Test。 NB/T 47009-2017 Low-temperature pressure-bearing equipment alloy steel for forging NB/T 47009-2010 Low-alloy steel forgings for low temperature pressure equipments NB/T 47010-2017 Stainless steel and heat-resistant steel forgings used in pressure equipment NB/T 47010-2010 Stainless and heat-resisting steel forgings for pressure equipments NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47013.4-2015 "Non-destructive testing of pressure equipment - Part 4: Magnetic particle testing" NB/T 47013.5-2015 Non-destructive testing of pressure equipment - Part 5: Penetrant testing NB/T 47014-2023 Pressure equipment welding process qualification