GB 27791-2020 City gas pressure regulating installation

GB 27791-2011 City gas pressure regulating installation

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 12459-1990 Steel butt-welding seamless pipe fittings GB/T 12459-2005 Steel butt-welding seamless pipe fittings GB/T 12459-2017 Steel buttwelding pipe fittings—Types and parameter GB/T 12459-2025 Steel buttwelding piping fittings—Types and parameters GB/T 13401-1992 Steel plate butt-welding pipe fittings GB/T 13401-2005 Steel plate butt-welding pipe fittings GB/T 13401-2017 Steel buttwelding pipe fittings—Technical specification GB/T 13401-2025 Steel buttwelding piping fittings—Technical specification 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 14976-2002 Stainless steel seamless tubes for fluid transport GB/T 14976-2012 Seamless stainless steel pipes for fluid transport GB/T 14976-2025 Seamless stainless steel pipes for fluid transport GB/T 17185-1997 Steel pipe fittings for flanged joint GB/T 17185-2012 Steel flanged fittings GB/T 19672-2005 Specification of pipeline valves GB/T 19672-2021 Pipeline valves—Technical specification GB/T 20801.3-2006 Pressure piping code—Industrial piping—Part 3:Design and calculation GB/T 20801.3-2020 Pressure piping code—Industrial piping—Part 3:Design and calculation GB/T 20801.4-2006 Pressure piping code—Industrial piping—Part 4:Fabrication and assembly GB/T 20801.4-2020 Pressure piping code—Industrial piping—Part 4:Fabrication and assembly GB/T 20801.5-2006 Pressure piping code—Industrial piping—Part 5:Inspection and testing GB/T 20801.5-2020 Pressure piping code—Industrial piping—Part 5:Inspection and testing GB/T 20801.5-2025 Pressure piping code—Part 5:Hydrogen piping and pipelines GB/T 25198-2010 Heads for pressure vessels GB/T 25198-2023 Heads for pressure vessels GB 27790-2011 City gas pressure regulators GB 27790-2020 City gas pressure regulator GB/T 32201-2015 Gas meters GB/T 36051-2018 Gas filter GB 50058-2014 Code for design of electrical installations in explosive atmospheres GB 50169-2016 Code for construction and acceptance of grounding connection electric equipment installation engineering GB 50235-2010 Code for construction and acceptance of industrial metallic piping GB 50236-2011 Code for construction and acceptance of field equipment, industrial pipe welding engineering CJ/T 180-2003 Manually operated gas valves for use in house CJ/T 180-2014 Manually operated gas valves for gas installations of buildings CJ/T 514-2018 Metal valves for gas transmission HG/T 20592 HG/T 20613 HG/T 20615 HG/T 20623 HG/T 20634 JB/T 4711-2003 Coating and packing for pressure vessels transport JB/T 11492-2013 Copper ball valve and stop valve for gas pipeline NB/T 47008-2017 Carbon steel and alloy steel forgings used in pressure equipment NB/T 47008-2010 Carbon and alloy steel forgings for pressure equipments 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 47013.1-2015 Non-destructive testing of pressure equipment - Part 1: General requirements NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47013.3-2023 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing NB/T 47013.3-2015 Non-destructive testing of pressure equipment - Part 3: Ultrasonic 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 47013.6-2015 Non-destructive testing of pressure equipment - Part 6: Eddy current testing NB/T 47013.7-2012 Nondestructive testing of pressure equipments-Part 7:Visual examination NB/T 47013.8-2012 Nondestructive testing of pressure equipments-Part 8:Leak Testing NB/T 47013.8-2025 Non-destructive testing of pressure equipment - Part 8: Leakage testing NB/T 47013.9-2012 Nondestructive testing of pressure equipments-Part 9:Acoustic emission testing NB/T 47013.10-2015 Non-destructive testing of pressure equipment - Part 10: Ultrasonic testing using time-of-flight diffraction method NB/T 47013.10-2010 Nondestructive testing of pressure equipments-Part 10:Ultrasonic time of flight diffraction technique NB/T 47013.11-2023 Non-destructive testing of pressure equipment - Part 11: Digital imaging detection using X-ray technology NB/T 47013.11-2015 Non-destructive testing of pressure equipment - Part 11: X-ray digital imaging testing NB/T 47013.12-2015 Non-destructive testing of pressure equipment - Part 12: Magnetic flux leakage testing NB/T 47013.13-2015 Non-destructive testing of pressure equipment - Part 13: Impulse eddy current testing NB/T 47013.14-2023 Non-destructive testing of pressure equipment - Part 14: X-ray computer-aided imaging inspection NB/T 47013.14-2016 Non-destructive testing of pressure equipment - Part 14: X-ray computer-aided imaging detection NB/T 47013.15-2021 NB/T 47013.15-2021 Nondestructive testing for pressure equipment - Part 15: Phased array ultrasonic testing NB/T 47013.16-2024 NB/T 47013.16-2024 Nondestructive testing of pressure equipment Part 16: Infrared thermal imaging testing NB/T 47013.17-2024 NB/T 47013.17-2024 Nondestructive testing for pressure equipment - Part 17: Magnetic-memory testing NB/T 47013.18-2024 NB/T 47013.18-2024 Nondestructive testing for pressure equipment - Part 18: Array eddy current testing NB/T 47013.21-2025 Non-destructive testing of pressure equipment - Part 21: Detection using alternating electromagnetic fields NB/T 47015-2023 Stress vessel welding procedure SY/T 0510-2017 Steel butt-welding pipe fittings specification SY/T 0510-2010 Steel butt welding pipe fittings specification SY/T 0510-1998 Steel butt welded pipe fittings SY/T 0516-2016 Insulation joint and insulation flange technical specifications SY/T 0516-1997 Insulating flange design technical regulations SY/T 0516-2008 Insulation joint and insulation flange technical specifications SY 5257-1991 Steel Bending Pipe SY/T 5257-2012 Steel Induction Heating Bending Tubes for Oil and Gas Transportation SY/T 5257-2004 Steel bends for oil and gas transportation TSG D0001-2009 Pressure Pipe Safety Technology Supervision Regulation for Industrial Pressure Pipe TSG 21-2016 Supervision Regulation on Safety Technology for Stationary Pressure Vessel