The four national valve standards will be implemented on May 1, 2020

                  Column:Industry trends 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 codingStandard nameSubstitute standard numberImplementation date
                  1
                  GB/T 12234-2019

                  Steel gate valve with stud to cover for petroleum and natural gas

                  GB/T 12234-20072020-5-1
                  2
                  GB/T 22652-2019Surfacing welding process evaluation of valve sealing surfaceGB/T 22652-20082020-5-1
                  3
                  GB/T 24925-2019Technical conditions of cryogenic valvesGB/T 24925-20102020-5-1
                  4
                  GB/T 38202-2019Installation, use and maintenance of all welded valves
                  2020-5-1
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