Download or read book GB T 12224 2015 Translated English of Chinese Standard GBT 12224 2015 GB T12224 2015 GBT12224 2015 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2018-11-09 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the pressure-temperature rated values, materials, design requirements, inspection and test, markings of steel valves, and requirements for special pressure level valves and defined pressure level valves. This Standard applies to flanged, threaded and welded valves, as well as clipon valves and valves for single flange installation, of which the pressurebearing members are made using the materials given in Table 1A and Table 1B; the valve body is made by casting, forged rolling, rolling and assemblingwelding. This Standard includes valves of which the nominal pressure is Class series and PN series.