Post on 09-Jan-2016
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7/17/2019 DRILL RODS - Technical Specification2
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WIRE LINE HEAT TREATED DRILL RODSTECHNICAL SPECIFICATIONS
Sizes & Weights NMO size HMO size
Outside Diameter
Inside Diameter
Weight "3 meter length"
2 ¾ in.
2 in.
50.5 lb
69.9 mm
60.3 mm
22.9 kg
3 ½ in
3 in
75.4 lb
88.9 mm
77.8 mm
34.2 kg
Mechanical Property
Raw material
Yield Strength (Tubing)
Tensile Strength (Tubing)
Cold Drawn Seamless Precision Tube ASTM A519 Alloy Steel
690 Mpa (100,000 PSI)
813 Mpa (118,000 PSI)
Straightness (Tubing/Rod) 1 mm x 3 meter (Max.)
Thread Specifications
Thread
Thread Hardness
Joint Tensile Strength
Joint Twisting to break
Type “M0”, Acme modificated 3 TPI (thread per inch)
Quench & Temper
NMO size HMO size
128,000 lbf
8,100 lbf-ft
58.054 kgf
1120.0 kgf-mt
160,000 lbf
12,300 lbf-ft
72.574 kgf
1700.0 kgf-mt
Heat Treatment & Thread Protections
Heat treatment
Thread treatment
Both ends are through heat treatment (Quench & Temper) prior to
threading (approx. 4 to 6 inch.)
Pin end / Bonded coating providing oil absorptive friction
reducing surface.
Box end / Rust prevention oil.
Packaging
Drill rods bundle are protected with hexagonal steel caps.
Bundle size / 19 pcs. (for N and H size).
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