The four national valve standards will be implemented on May 1, 2020
Column：INDUSTRY NEWS
Time：2019-11-16
Recently, the state administration for market supervision and administration of China (Standardization Administration of China) approved and issued 343 national standards and 2 revision orders of national standards, including...
Recently, the state administration for market supervision and administration of China (Standardization Administration of China) approved and issued 343
national standards and 2 revision orders of national standards, including "dimensions, product geometric specifications (GPS) and tolerance values of
radial bearing stop groove and stop ring".
| No | Standard coding | Standard name | Substitute standard number | Implementation date |
| 1 | GB/T 12234-2019 | Steel gate valve with stud to cover for petroleum and natural gas | GB/T 12234-2007 | 2020-5-1 |
| 2 | GB/T 22652-2019 | Surfacing welding process evaluation of valve sealing surface | GB/T 22652-2008 | 2020-5-1 |
| 3 | GB/T 24925-2019 | Technical conditions of cryogenic valves | GB/T 24925-2010 | 2020-5-1 |
| 4 | GB/T 38202-2019 | Installation, use and maintenance of all welded valves | 2020-5-1 |
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