RC Drilling Supplies: 4.25 inch OD Drill pipe specs

SPECIFICATIONS 4.25’’ DUAL TUBE RC PIPE

STANDARD LENGTHS	Make-up Length 5 ft; 10 ft; 15 ft. and 20 ft. (also available in metric 1.5 ; 3.0 ; 4.5 and 6.0 meter sizes)
TOOL JOINT	Heat Treated 4130 Alloy 34-38 RC Minimum Yield Strength 110 ksi O.D. 4.050" I.D. 3.000" Wall 0.5250"
OUTER TUBE	Minimum Yield Strength 90 ksi O.D. 3.875" I.D. 3.375" Wall 0.250"
INNER TUBE	Minimum Yield Strength 90 ksi O.D. 2.250" I.D. 1.937" Wall 0.156"
INNER PIPE ENDS	Male 4130 Alloy 42-45 RC Female 4130 Alloy 34-36 RC
ROD WEIGHT	154 lbs. per 10 ft. 83 lbs. per 5 ft.
TORQUE RATING	7,000 ft. - lbs. (9,490 N-m)
TENSION RATING	90,000 lbs. (40,823 kg)
FLATS	3.250" Across X 2.500" Wide 5.00" From Shoulder On Box 1.50" From Shoulder On Pin
O-RINGS	2 each Nitrile #228
INNER TUBE SEALING	Inner Tubes make up and seal along with tool joints.