GB/T 20671.3-2020 非金属垫片材料分类体系及试验方法第3部分:垫片材料耐液性试验方法
GB/T 20671.3-2020.Classification system and test methods for nonmetallic gasket...
国家标准2023.07.30
GB/T 20671.3-2020.Classification system and test methods for nonmetallic gasket...
国家标准2023.07.30
GB/T 20671.1-2020.Classification system and test methods for nonmetallic gasket...
国家标准2023.07.30
GB/T 38812.2-2020.Direct reduced iron-Determination of metallic iron content-The...
国家标准2023.07.30
GB/T 20671.5-2020.Classification system and test methods for nonmetallic gasket...
国家标准2023.07.30
GB/T 38812.3-2020.Direct reduced iron-Determination of silicon, manganese,phosph...
国家标准2023.07.30
GB/T 20671.6-2020.Classification system and test methods for nonmetallic gasket...
国家标准2023.07.30
GB/T 38913-2020.Test methods for hydride orientation fraction of nuclear grade z...
国家标准2023.07.30
GB/T 38912-2020.Test method for closed-end burst of zirconium tubes at room temp...
国家标准2023.07.30
GB/T 38952-2020.Non-destructive testing-Testing method for measuring residual st...
国家标准2023.07.30
GB/T 38944-2020.Non-destructive testing-Testing method of small-angle neutron sc...
国家标准2023.07.30