API SPEC 7 ADD 3 Specification for Rotary Drill Stem Elements
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API SPEC 7 ADD 3 Document Information:
Title
Specification for Rotary Drill Stem Elements
American Petroleum Institute
Publication Date:
Jun 1, 2008
Scope:
COVERAGE
This specification covers requirements on drill-stem members (except
drill pipe), including threaded connections, gauging practice, and master gauges therefor. A typical drill-stem assembly
is shown in Figure 1. Also included, as appendices, are recommended
practices on care and use of
regional master, reference master, and working gauges.
MATERIAL REQUIREMENTS
Where material requirements are not otherwise specified, material for
equipment supplied to this
specification may vary depending on the application but shall comply
with the manufacturer's
written specifications. Manufacturer specifications shall define:
a. Chemical composition limits.
b. Heat treatment conditions.
c. Mechanical property limits:
1. Tensile strength.
2. Yield strength.
3. Elongation.
4. Hardness.
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