GB/T 15601-1995 Metallic envelope gaskets for pipe flanges

GB/T 15601-2013 Metallic envelope gaskets for pipe flanges

GB/T 232-1999 Metallic materials—Bend test GB/T 232-2010 Metallic materials—Bend test GB/T 232-2024 Metallic materials—Bend testing method GB/T 710-1991 Hot-rolled quality carbon structural steel sheets and strips GB/T 710-2008 Hot-rolled quality carbon structural steel sheets and strips GB/T 2040-2002 Sheet of copper and copper alloy GB/T 2040-2008 Sheet of copper and copper alloy GB/T 2040-2017 Copper and copper alloy sheet GB/T 2518-1988 Continual hot-dip zinc-coated steel sheets and strips GB/T 2518-2004 Continuous hot-dip zinc-coated steel sheets and strips GB/T 2518-2008 Continuously hot-dip zinc-coated steel sheet and strip GB/T 2518-2019 Continuously hot-dip zinc and zinc alloy coated steel sheet and strip GB/T 2520-2000 Cold-reduced electrolytic tinplate GB/T 2520-2008 Cold-reduced electrolytic tinplate GB/T 2520-2017 Cold-reduced electrolytic tinplate GB/T 3280-1992 Cold rolled stainless steel sheets and plates GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 3280-2015 Cold rolled stainless steel plate, sheet and strip GB/T 3880-1997 Aluminium and aluminium alloy rolled sheet GB/T 3880.1-2006 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 1:Technical conditions of delivery GB/T 3880.1-2012 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 1:Technical conditions of delivery GB/T 3880.1-2023 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 1:Technical conditions of delivery GB/T 3880.2-2006 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 2:Mechanical properties GB/T 3880.2-2012 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 2:Mechanical properties GB/T 3880.2-2024 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 2:Mechanical properties GB/T 3880.3-2006 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 3:Tolerances on forms and dimensions GB/T 3880.3-2012 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 3:Tolerances on forms and dimensions GB/T 3880.3-2024 Wrought aluminium and aluminium alloy plates,sheets and strips for general engineering—Part 3:Tolerances on forms and dimensions GB/T 12385-1990 Test method for sealing characteristics of gaskets for pipe flanges GB/T 12385-2008 Standard test method for sealability of gaskets for pipe flanges GB/T 12621-1990 Test method for stress relaxation of gaskets for pipe flanges GB/T 12621-2008 Standard test method for stress relaxation of gaskets for pipe flanges GB/T 12622-1990 Test method for compressibility and recovery of gaskets for pipe flanges GB/T 12622-2008 Standard test method for compressibility and recovery of gaskets for pipe flanges GB/T 12385-2025 Standard test methods for sealability of gaskets for pipe flanges

ISO 7483-1991