1、 This Standard has been translated by the Scientific and Industrial Valve Manufacturers Association with the permission of the American Petroleum Institute(API).This translated version shall not replace nor supersede the English language version which remains the official version.API shall not be re
2、sponsible for any errors,discrepancies or misinterpretations arising from this translation.No additional translation or reproduction may be made of the Standard without the prior written consent of API.-(API).,.API ,.API.American Petroleum Institute 12201 Street,Northwest Washington,D.C.20005 Proces
3、s Valve Qualification Procedure API ,2003 591 API RECOMMENDED PRACTICE THIRD EDITION,SEPTEMBER 2003 Pipeline valves Process Valve Qualification Procedure API RECOMMENDED PRACTICE 591THIRD EDITION,SEPTEMBER 2003API 591,iii -(API)2007-102697 API,API,.American Petroleum Institute -.API 591,iv (API).,.,
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