GB/T 20801.5-2025 Pressure piping code—Part 5:Hydrogen piping and pipelines

GB/T 20801.1-2025 Pressure piping code—Part 1:Industrial piping

GB/T 34542.2-2018 Storage and transportation systems for gaseous hydrogen—Part 2:Test methods for evaluating metallic material compatibility in hydrogen atmosphere GB/T 35990-2018 Metal bellows expansion joints for pressure piping GB/T 36701-2018 Guideline for defect repair of buried steel pipelines GB/T 38343-2019 Technical specification for flange joints installation GB/T 38942-2020 Pressure piping code—Utility piping GB/T 39245.1-2020 Grooved metal gaskets with covering layers for pipe flanges—Part 1:PN designated GB/T 39245.2-2020 Grooved metal gaskets with covering layers for pipe flanges—Part 2:Class designated GB/T 40079-2021 Classification system and qualification procedures for fugitive emission type testing of valves GB/T 43922-2024 Inspection and evaluation of in-service polyethylene gas pipeline GB 50028-2006 Code for design of city gas engineering GB 50032-2003 Code for seismic design of outdoor water supply,sewerage,gas and heating engineering GB 50156-2021 Code for design and construction of filling station GB 50160-2008 Fire prevention code of petrochemical enterprise design GB 50177-2005 Design code for hydrogen station GB/T 50470-2017 Seismic technical code for oil and gas transmission pipeline engineering GB/T 50493-2019 Specification for design of combustible gas and toxic gas detection and alarm for petrochemical industry GB 50516-2010 Technical code for bydrogen fuelling station GB 50683-2011 Code for acceptance of field equipmemt,industrial pipe welding construction quality GB/T 50698-2011 Standard for AC interference mitigation of buried steel pipelines GB 50991-2014 Technical standard for DC interference mitigation of buried steel pipeline GB/T 51098-2015 Code for planning of city gas GB 51283-2020 Fire protection standard for engineering design of fine chemical enterprise GB/T 51474 GB 55002-2021 Code for seismic design of buildings GB 55009-2021 Code for design of city gas engineering CJJ/T 49-2020 Technical standard for stray current corrosion protection ln metro CJJ 63-2018 Technical standard for polyethylene(PE) gaseous fuel pipeline engineering CJJ 95-2013 Technical specification for external corrosion control of buried steel pipeline for city gas CJJ/T 153-2010 Standard for city gas signs CJJ/T 215-2014 Technical specification for leak detection of city gas piping system CJJ/T 250-2016 Technical specification for crossing and aerial crossing engineering of city gas pipeline HG/T 20537.3-1992 The technical requirements for welded steel pipes of austenitic stainless steel used in chemical installations HG/T 20537.4-1992 Technical requirements for large-diameter welded steel pipes made of austenitic stainless steel used in chemical equipment HG/T 20553-2011 Selection series of steel pipe size for chemical piping HG/T 20553-1993 Selection series of seamless and welded steel pipes for chemical piping applications HG/T 20592 HG/T 20606 HG/T 20607 HG/T 20609 HG/T 20610 HG/T 20611 HG/T 20612 HG/T 20613 HG/T 20614 HG/T 20615 HG/T 20623 HG/T 20627 HG/T 20628 HG/T 20630 HG/T 20631 HG/T 20632 HG/T 20633 HG/T 20634 HG/T 20635 HG/T 21547-1993 Piping plugs, spacer rings, and 8-shaped blind plates made of steel for use in pipelines JB/T 74-2015 JB/T 74-2015 Steel Pipe Fitting Technical Specification JB/T 74-1994 Flanging technical requirements for piping JB/T 75-2015 Steel pipe flange type and parameters JB/T 75-1994 Type of Pipeline Flanges JB/T 79-2015 Overall steel pipe flange JB/T 79.1-1994 Convex Surface Integral Cast Steel Pipe Flanges JB/T 79.2-1994 Angular-groove integral cast steel pipe flange JB/T 79.3-1994 Screw groove surface integral cast steel pipe flange JB/T 79.4-1994 Overall cast-steel pipe flange with annular connection surface JB/T 81-2015 Sheet steel plate welding flanged steel pipe flange JB 81-1994 Convex Panel-Type Flat-Weld Steel Pipe Flanges JB/T 82-2015 Welding Steel Pipe Flanges JB/T 82.1-1994 Flange for welded steel pipes with convex surface JB/T 82.2-1994 The welding steel pipe flange of concave and convex faces JB/T 82.3-1994 Serrated face butt welding steel pipe flange JB/T 82.4-1994 Round connected steel pipe flange for face welding JB/T 83-2015 Flat welding ring plate type loose steel pipe flange JB/T 83-1994 Flush weld ring plate type loose steel pipe flange JB/T 84-2015 Welding Ring Plate Type Slip-fit Steel Pipe Flange JB/T 84-1994 Thin-walled flange steel pipe with welding flange and bushing in concave and convex surfaces JB/T 85-2015 Flange plate type loose steel tube flange JB/T 85-1994 Threaded flange steel pipe flange with loose steel plate JB/T 6439-2008 Valve pressure parts are inspected by magnetic particle testing JB/T 6439-1992 The valve is subjected to magnetic particle inspection of the pressure die-cast steel parts JB/T 6440-2008 The valve is subjected to radiographic inspection of the pressure die-cast steel component JB/T 6440-1992 The valve is subjected to radiographic inspection of the pressure die-cast steel parts JB/T 6899-1993 Fire-resistant Test for Valves JB/T 6899-1993 JB/T 6902-2008 Check method for liquid penetration in valves JB/T 6903-2008 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 7747-2010 needle-shaped stop valve JB/T 7747-1995 Needle-shaped stop valve JB/T 7927-2014 The appearance quality requirements for valve cast steel components JB/T 8937-2010 Check valve with snap-action design JB/T 8937-1999 Check valve with clamp mount