GB/T 39280-2020 钨极惰性气体保护电弧焊用非合金钢及细晶粒钢实心焊丝
GB/T 39280-2020.Rods, wires and deposits for tungsten inert gas welding of non a...
国家标准2023.08.06
GB/T 39280-2020.Rods, wires and deposits for tungsten inert gas welding of non a...
国家标准2023.08.06
GB/T 39279-2020.Wire electrodes, wires , rods and deposits for gas shielded arc...
国家标准2023.08.06
GB/T 39534-2020.Corrosion of metals and alloys-Method for determination of the u...
国家标准2023.08.06
GB/T 23899-2020.Test and calculation methods of energy consumption for forestry...
国家标准2023.08.06
GB/T 39522-2020.Metric series wires for the pitch diameters of screw threads.1范围...
国家标准2023.08.06
GB/T 18102-2020.Laminate floor coverings.1范围GB/T 18102规定了浸渍纸层压木质地板的术语和定义、分类、要求、检...
国家标准2023.08.06
GB/T 39913-2021.General science and technology infrastructure-User metadata.1范围G...
国家标准2023.08.06
GB/T 25068.2-2020.Information technology-Security techniques-Network security-Pa...
国家标准2023.08.06
GB/T 39848-2021.Methods of measurement for flat panel display color gamut.1范围GB/...
国家标准2023.08.06
GB/T 24295-2021.Intelligent mail & parcel locker.1范围GB/T 24295规定了智能信包箱的系统结构、...
国家标准2023.08.06