1、Specification for Rotary Drill Stem ElementsANSI/API SPECIFICATION 7-1FIRST EDITION,MARCH 2006API MONOGRAM PROGRAM EFFECTIVE DATE:SEPTEMBER 2006ADDENDUM 1,MARCH 2007ADDENDUM 2,AUGUST 2009(API MONOGRAM PROGRAM EFFECTIVE DATE:FEBRUARY 1,2010)ADDENDUM 3,APRIL 2011(API MONOGRAM PROGRAM EFFECTIVE DATE:OC
2、TOBER 1,2011)ADDENDUM 4,FEBRUARY 2019(API MONOGRAM PROGRAM EFFECTIVE DATE:AUGUST 1,2019)ERRATA 1,JULY 2020ISO 10424-1:2004(Modified),Petroleum and natural gas industriesRotary drilling equipmentPart 1:Rotary drill stem elementsREAFFIRMED,JANUARY 2021Special NotesAPI publications necessarily address
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