GB/T 18852-2020.Non-destructive testing-Ultrasonic testing-Reference blocks and test procedures for ...
GB/T 20323-2020 铣刀代号 整体或镶齿结构或带可转位切削刃的带柄和带孔铣刀
GB/T 20323-2020.Milling cutters designation-Shank-type and bore-type milling cutters of solid or tip...
GB/T 19473.1-2020 冷热水用聚丁烯(PB)管道系统第1部分:总则
GB/T 19473.1-2020.Polybutene ( PB) piping systems for hot and cold water installations-Part 1 : Gene...
GB/T 1454-2021 夹层结构侧压性能试验方法
GB/T 1454-2021.Test method for edgewise compressive properties of sandwich constructions. 1范围 GB/T 1...
GB/T 19473.2-2020 冷热水用聚丁烯(PB)管道系统第2部分:管材
GB/T 19473.2-2020.Polybutene (PB) piping systems for hot and cold water installations-Part 2:Pipes. ...
GB/T 19473.5-2020 冷热水用聚丁烯(PB)管道系统第5部分:系统适用性
GB/T 19473.5-2020.Polybutene (PB) piping systems for hot and cold water installations-Part 5: Fitnes...
GB/T 39273-2020 滚动轴承和关节轴承 电子媒体查询结构用特性词汇标识的特征和性能指标
GB/T 39273-2020.Rolling bearings and spherical plain bearings-Search structure for electronic media-...
GB/T 50538-2020 埋地钢质管道防腐保温层技术标准
GB/T 50538-2020.Technical standard for anti-corrosion and insulation coatings of buried steel pipeli...
GB 50190-2020 工业建筑振动控制设计标准
GB 50190-2020.Standard for vibration control design of industrial buildings. 1总则 1.0.1 为在工业建筑结构振动控制中...
GB/T 28799.5-2020 冷热水用耐热聚乙烯(PE-RT)管道系统第5部分:系统适用性
GB/T 28799.5-2020.Polyethylene of raised temperature resistance ( PE-RT) piping systems for hot and ...
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