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SPIRAL HEAVY WEIGHT DRILL PIPE
(INTEGRAL DESIGN)
MATERIAL (AISI 4145H) – MECHANICAL PROPERTIES
Precision machined from one integral piece of AISI 4145H Q&T bar stock.
Hardness: BHN 1" below surface 290-341
Tensile Strength PSI 140,000 min.
Yield Strength PSI 110,000 min.
Elongation in 2" gage length 13% min.
Reduction of Area 40% min.
Impact Strength Type X 40 ft.lb.min.
QUALITY CONTROL
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Each piece of Integral Spiral Heavy Weight Drill Pipe is 100% dimensionally inspected and the material is full length ultrasonically inspected. All connections are 100% inspected to conform to latest API standards. Full material certifications are provided with each piece of Integral Spiral Heavy Weight Drill Pipe.
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HARDBANDING
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To optimize wear resistance, hardbanding is standard on tool joint connections and central upset. This heavy-duty hardmetal application is a closely controlled welding process applied with an automatic hardbanding machine. Hardbanding is applied 4" on the box tool joint, 4" on the pin tool joint, 1" on 18 tapered shoulder of box tool joint and two 3" band on center upset. Tungsten carbide, Arnco 100XT, Arnco 200XT, Arnco 300XT, Smooth X, ARMACOR-M and TCS TITANIUM Hardbandings are available.
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CONNECTION FEATURES
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API stress relief groove on pins and boreback relief feature on boxes are standard on the 4½" and 5" Spiral Heavy Weight Drill Pipes. All connections are kemplated, coated with lubricant and provided with thread protectors. Thread roots are cold rolled on all sizes.
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DIMENSIONAL DATA – RANGE II
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Nom. Size
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Tool Joint OD
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Nom. ID
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Wall Thickn-ess
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Centre Upset OD
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Centre Upset Length (ft.)
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Elevator Upset
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Connection Size
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Approx. Overall Length Pin/Box
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Approx. Overall Length (ft.)
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Weight Per Foot
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Weight Per Joint 30 ft.
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Make Up Torque ft.-lbs
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3½
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4¾
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2¼
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0.625
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4
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18.5
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3â…
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NC 38
(3½ IF)
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25/23
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30.5
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26.7
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600
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9,900
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4
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5¼
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29∕16
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0.719
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4½
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18.5
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4â…›
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4 FH
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25/23
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30.5
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30
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900
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14,500
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4½
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6¼
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213∕16
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0.875
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5
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18.5
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4â…
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NC 46
(4 IF)
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25/23
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30.5
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45
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1,350
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21,800
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5
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6½
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3
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1.000
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5½
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18.5
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5â…›
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NC 50
(4½ IF)
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25/23
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30.5
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54
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1,620
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29,400
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5½
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7
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3½
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1.063
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6
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18.5
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511∕16
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5½ FH
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25/23
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30.5
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62.7
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1,880
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33,200
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6â…
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8
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4
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1.312
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7â…›
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18.5
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6¾
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6â… FH
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25/23
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30.5
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77
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2,310
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46,900
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ORDERING INSTRUCTIONS:
- Nominal Size
- Hardbanding Type
- API Relief groove pin and boreback box, if required.
- NOTES: All dimensions are given in inches unless otherwise stated.
All weights are approximate.
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