Definition(s)
Mean Hardness Number
Result of averaging the hardness numbers for the single specimen or location being evaluated.
Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Result of averaging the hardness numbers for the single specimen or location being evaluated.
Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards