GB/T 37613-2019 Embedded channel steel

GB/T 1591-2008 High strength low alloy structural steels GJB 150.16A GB/T 90.2-2002 Fasteners—Marking and packaging GB/T 97.1-2002 Plain washers—Product grade A GB/T 197-2003 General purpose metric screw threads—Tolerances GB/T 197-2018 General purpose metric screw threads—Tolerances GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 2101-1989 General requirements of acceptance, packaging, marking and certification for section steel GB/T 2101-2008 General requirement of acceptance,packaging,marking,and certification for section steel GB/T 2101-2017 General requirement of acceptance,packaging,marking and certification for section steel 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 3103.1-2002 Tolerances for fasteners—Bolts, screws, studs and nuts GB/T 3103.3-2000 Tolerances for fasteners—Plain washers GB/T 3103.3-2020 Tolerances for fasteners—Plain washers GB/T 4336-2002 Standard test method for spark discharge atomic emission spectrometric analysis of carbon and low-Alloy steel(routine method) GB/T 4336-2016 Carbon and low-alloy steel—Determination of multi-element contents—Spark discharge atomic emission spectrometric method (routine method) GB/T 4956-2003 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness-Magnetic method GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates—Rating of test specimens and manufactured articles subjected to corrosion tests GB/T 9978.1-2008 Fire-resistance tests—Elements of building construction—Part 1:General requirements GB/T 10125-1997 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 10125-2012 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 13912-2002 Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods GB/T 13912-2020 Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods GB/T 26110-2010 Specification of zinc-aluminium flake coatings GB/T 26784-2011 Fire resistance test for elements of buliding construction—Alternative and additional procedures TB/T 2074-2020 The testing methods for components of electrified railway contact network TB/T 3274-2011 TB/T 3274-2011 railway concrete beam component multi-alloy gas hardening anti-corrosion technical specifications GB 50016-2014 Code for fire protection design of buildings JB/T 9186-1999 Welding procedure specification for CO2 shielded arc welding GB/T 3098.2-2025 Mechanical properties of fasteners—Part 2:Nuts GB/T 4956-2025 Non-magnetic coatings on magnetic substrates—Measurement of coating thickness—Magnetic method GB/T 26110-2025 Zinc-aluminium flake coatings—Technical specifications