T/CECS 10120-2021 Stainless steel composite steel butt welding pipe fittings

GB/T 241-1990 Metal tubes—Hydrostatic pressure testing GB/T 241-2007 Metal materials—Tube—Hydrostatic pressure test GB/T 2102-1988 Acceptance, packing, marking, and certification of pipe GB/T 2102-2006 Acceptance, packing, marking and quality certification of steel pipe GB/T 2102-2022 Acceptance,packaging,marking and quality certification for steel tubular products GB/T 4334-2008 Corrosion of metals and alloys—Test methods for intergranular corrosion of stainless steels GB/T 4334-2020 Corrosion of metals and alloys—Test methods for intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless steels GB/T 4334.1-2000 Method of 10 per cent oxalic acid etch test for stainless steels GB/T 4334.2-2000 Method of ferric sulfate-sulfuric acid test for stainless steels GB/T 4334.3-2000 Method of 65 percent nitric acid test for stainless steels GB/T 4334.4-2000 Method of nitric-hydrofluoric acid test for stainless steels GB/T 4334.5-2000 Method of copper sulfate-sulfuric acid test for stainless steels GB/T 4334.6-2000 Method of 5 per cent sulfuric acid test for stainless steels GB/T 4334.6-2015 Test method for stainless steels in 5% sulfuric acid GB/T 6396-1995 Clad plates—Machanical and technological test GB/T 6396-2008 Clad steel plates—Mechanical and technological test GB/T 8165-1997 Stainless steel clad plates and strips GB/T 8165-2008 Stainless steel clad plates,sheets and strips 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 9452-2003 Testing method for work zone of Heat treatment furnace GB/T 9452-2012 Testing method for working zone of heat treatment furnace GB/T 9452-2023 Test method for qualified work zone of heat treatment furnace 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 13305-1991 Austenitic stainless steels—Determination of area content of the α-phase—Micrographic method using standard diagrams GB/T 13305-2008 Micrographic method for determining area content of the α-phases in stainless steels GB/T 13305-2024 Method for determining content of the α-phase in stainless steels 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 17219-1998 Standard for safety evaluation of equipment and protective materials in drinking water system 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 CJ/T 192-2004 Composite steel pipe stainless steel lined CJ/T 192-2017 Composite steel pipe stainless steel lined NB/T 47002.1-2019 Stress-resistant composite plate for pressure vessels - Part 1: Stainless steel-steel composite plate 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 NB/T 47015-2023 Stress vessel welding procedure CECS 205 GB/T 241-2025 Metallic materials—Tube—Hydrostatic pressure test GB/T 8165-2025 Stainless steel clad plate,sheet and strip GB/T 17219-2025 Hygienic safety evaluation of distribution equipment,protective materials and treatment materials in drinking water system GB/T 12459-2025 Steel buttwelding piping fittings—Types and parameters GB/T 13401-2025 Steel buttwelding piping fittings—Technical specification