Definition(s)
REG
API regular style of thread design.
Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
API regular style of thread design.
Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global Standards