GB/T 39169-2020.Blanks for diamond circular saw blade-Mounting and fixing bores-...

国家标准2023.08.04

GB/T 3452.4-2020.O-rings for fluid power systems-Part 4: Anti-extrusion rings( b...

国家标准2023.08.04

GB/T 12604.5-2020.Non-destructive testing-Terminology-Magnetic particle testing....

国家标准2023.08.04

GB/T 12604.1-2020.Non-destructive testing-Terminology-Ultrasonic testing.1范围GB/T...

国家标准2023.08.04

GB/T 12241-2021.Safety valves-General requirements.1范围GB/T 12241规定了安全阀的术语和定义、设计、...

国家标准2023.08.04

GB/T 19672-2021.Pipeline valves-Technical specification.1范围GB/T 19672规定了石油、天然气管线...

国家标准2023.08.04

GB/T 14383-2021.Forged fittings,socket-welding and threaded.1范围GB/T 14383规定了锻制承插...

国家标准2023.08.04

GB/T 21432-2021.Graphite pressure vessels.1范围GB/T 21432规定了石墨制压力容器的通用要求、材料、设计、制造、...

国家标准2023.08.04

GB/T 39141.1-2020.Mineral and sapphire watch-glasses-Part 1 : Dimensions and tol...

国家标准2023.08.04

GB/T 3903.26-2020.Footwear-Test methods for stiffeners and toepuffs- Bondability...

国家标准2023.08.04