Hangzhou Kaiwei Valve Group Co., LTD
Tel:+86-0571-88950660
Fax:+86-0571-88950550
E-mail:kw@kwvalve.cn
ADD:12F/B3 Shuangcheng International Mansion, Hangzhou, Zhejiang, China P.C310051
The four national valve standards will be implemented on May 1, 2020
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 |