GB/T 31259-2014 Pipe supports with thermoprobe

GB/T 27880-2025 Thermoprobe and pipe supports with thermoprobe

GB/T 1231-1991 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures GB/T 1231-2006 Specifications of high strength bolts with large hexagon head,large hexagon nuts,plain washers for steel structures GB/T 1231-2024 High strength bolts with large hexagon head assemblies for steel structures GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance indications GB/T 2650-1989 Method of impact test for welded joint GB/T 2650-2008 Impact test methods on welded joints GB/T 2650-2022 Destructive tests on welds in metallic materials—Impact tests GB/T 2651-1989 Method of tensile test for welded joint GB/T 2651-2008 Tensile test method on welded joints GB/T 2651-2023 Destructive tests on welds in metallic materials—Transverse tensile test GB/T 2652-1989 Method of tensile tests for weld and deposited metal GB/T 2652-2008 Tensile test methods on weld and deposited metal GB/T 2652-2022 Destructive tests on welds in metallic materials—Longitudinal tensile test on weld metal in fusion welded joints GB/T 2653-1989 Methods of bend and compression tests for welded joint GB/T 2653-2008 Bend test methods on welded joints GB/T 2654-1989 Methods of hardness tests for welded joint and surfacing metal GB/T 2654-2008 Hardness test methods on welded joints GB/T 3098.1-2000 Mechanical properties of fasteners—Bolts, screws and studs GB/T 3098.1-2010 Mechanical properties of fasteners—Bolts,screws and studs GB/T 3098.2-2000 Mechanical properties of fasteners—Nuts—Coarse thread GB/T 3098.2-2015 Mechanical properties of fasteners—Nuts GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts GB/T 3098.4-2000 Mechanical properties of fasteners—Nuts—Fine pitch thread GB/T 3098.6-2000 Mechanical properties of fasteners—Bolts, screws and studs made of stainless-steel GB/T 3098.6-2014 Mechanical properties of fasteners—Stainless steel Bolts,screws and studs GB/T 3098.6-2023 Mechanical properties of fasteners—Stainless steel bolts,screws and studs GB/T 17116.1-1997 Pipe supports and hangers—Part 1:Technical specification GB/T 17116.1-2018 Pipe supports and hangers—Part 1:Technical specification GB/T 17116.2-1997 Pipe supports and hangers—Part 2:Pipe attachments GB/T 17116.2-2018 Pipe supports and hangers—Part 2:Pipe attachments GB/T 17116.3-1997 Pipe supports and hangers—Part 3:Middle connection attachments and building structure attachments GB/T 17116.3-2018 Pipe supports and hangers—Part 3:Middle connection attachments and building structure attachments GB/T 18851.1-2005 Non-destructive testing—Penetrant testing—Part 1:General principles GB/T 18851.1-2012 Non-destructive testing—Penetrant testing—Part 1:General principles GB/T 18851.1-2024 Non-destructive testing—Penetrant testing—Part 1:General principles GB/T 18851.2-2005 Non-destructive testing—Penetrant testing—Part 2:Testing of penetrant materials GB/T 18851.2-2008 Non-destructive testing—Penetrant testing—Part 2:Testing of penetrant materials GB/T 18851.2-2024 Non-destructive testing—Penetrant testing—Part 2:Testing of penetrang materials GB/T 18851.3-2008 Non-destructive testing—Penetrant testing—Part 3:Reference test blocks GB/T 18851.4-2005 Non-destructive testing—Penetrant testing—Part 4:Equipment GB/T 27880-2011 Thermoprobe GB/T 27880-2025 Thermoprobe and pipe supports with thermoprobe GB 50017-2017 Code for design of steel structures GB 50205-2001 Code for acceptance of construction quality of steel structures GB 50205-2020 Standard for acceptance of construction quality of steel structures HG/T 20670 JGJ 118-2011 Code for design of soil and foundation of building in frozen soil region