1、Safe Use of 2-inch Hammer Unions for Oilfield ApplicationsAPI RECOMMENDED PRACTICE 7HU1 FIRST EDITION,MAY 2009ERRATA,FEBRUARY 2014 REAFFIRMED,FEBRUARY 2020Safe Use of 2-inch Hammer Unions for Oilfield ApplicationsUpstream SegmentAPI RECOMMENDED PRACTICE 7HU1FIRST EDITION,MAY 2009ERRATA,FEBRUARY 2014
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13、es,1220 L Street,N.W.,Washington,D.C.20005.Copyright 2009 American Petroleum InstituteForewordThis recommended practice(RP)is under the jurisdiction of the American Petroleum Institute(API)Subcommittee on Drilling Structures and Equipment(SC8).Nothing contained in any API publication is to be constr
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