API SPEC 7-1 RUSSIAN-2006 Specification for Rotary Drill Stem Elements (First Edition Effective September 2006 Incorporates Addendum 1 March 2007 Addendum 2 August 2009 Addendum 3 .pdf

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5、n Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodeks under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodeks un

6、der license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodeks under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API

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11、rican Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodeks under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodek

12、s under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodeks under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . .

13、 API. “.“Reproduced by Kodeks under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. All rights reserved“. “ “ . . API. “.“Reproduced by Kodeks under license from the American Petroleum Institute. No further reproduction is permitted. API opyright. A

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