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API Spec 8C Addendum 2Specification for Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fourth Edition / ISO 13535:2000 (Modified), Petroleum and natural gas industries-Drilling and production equipment-Hoisting equipment, AddendumAmendment by American Petroleum Institute, 04/15/2005
API Spec 8CSpecification for Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, Includes Errata (May 2014)standard by American Petroleum Institute, 03/01/2012
API Spec 8CSpecification for Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fourth Edition / ISO 13535:2000 (Modified), Petroleum and natural gas industries-Drilling and production equipment-Hoisting equipmentstandard by American Petroleum Institute, 02/01/2003
API Spec 8ADrilling and Production Hoisting Equipment, Includes Addendum 1 (2001)standard by American Petroleum Institute, 12/01/1997
API Spec 7NRV (R2012)Specification for Drill String Non-return Valves, First Editionstandard by American Petroleum Institute, 07/01/2006
API Spec 7K Errata 3Errata 3 to Specification for Drilling and Well Servicing Equipment, Sixth EditionAmendment by American Petroleum Institute, 10/01/2017
API Spec 7K Errata 2Errata to Specification for Drilling and Well Servicing Equipment, Sixth EditionAmendment by American Petroleum Institute, 08/01/2016
API Spec 7K ErrataErrata to Specification for Drilling and Well Servicing Equipment, Sixth EditionAmendment by American Petroleum Institute, 05/01/2016
API Spec 7K ErrataErrata to Specification for Drilling and Well Servicing Equipment, Fifth EditionAmendment by American Petroleum Institute, 08/01/2010
API Spec 7KDrilling and Well Servicing Equipment, Sixth Edition, Includes Errata 1 and 2 (2016), Errata 3 (2017)standard by American Petroleum Institute, 12/30/2015
API Spec 7KSpecification for Drilling and Well Servicing Equipment, Fifth Edition, Includes Errata (2010)standard by American Petroleum Institute, 06/01/2010
API Spec 7KSpecification for Drilling and Well Servicing Equipment, Fourth Edition (Includes current amendments)standard by American Petroleum Institute, 06/01/2005