Premium Dual Tube Drill Rod for Reverse Circulation Drilling

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RC Drilling Supplies: 3.25 inch OD Drill pipe specs

SPECIFICATIONS  3.25 inch DUAL TUBE RC PIPE

STANDARD LENGTHS

Make-up Length 5 ft. and 10 ft.
(also available in metric 1.5 and 3.0  meter sizes)

TOOL JOINT

Heat Treated 4130 Alloy 34-38 RC
Minimum Yield Strength 110 ksi
O.D. 3.350"

OUTER TUBE 

Minimum Yield Strength 80 ksi
O.D. 3.250" I.D. 2.812" Wall 0.219"

INNER TUBE 

Minimum Yield Strength 80 ksi
O.D. 1.875" I.D. 1.500" Wall 0.188"

INNER PIPE ENDS

Male 4130 Alloy 42-45 RC
Female 4130 Alloy 34-36 RC

ROD WEIGHT

115 lbs. per 10 ft.
61lbs. per 5 ft.

TORQUE RATING

4,500 lbs. - ft.

TENSION RATING

65,000 lbs. (30,000 kg)

FLATS

2.750" Across X 2.00" High
3.750" From Shoulder On Box
0.750" From Shoulder On Pin

O-RINGS

2 each Nitrile #224

INNER TUBE SEALING

Inner Tubes make up and seal along with
tool joints.

 

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