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 H-W Drill pipe |
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HWDP
The Heavy Weight Drill Pipe is made from one piece of AISI 4145H solid bar, fully heat-treated, all physical properties confirm with API Spec.7 Latest Editions.
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Hard banding
The wear-resistance hard banding is standard on tool joints connections and central upset. Hard banding is made by an aving.utomatic machine after preheating the pipe and is followed by stress relie
The Type of hand banding include Iron-Matrix powder alloy, Tungsten Carbide particle, and Arnco 100XT.
Standard Bands:
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one 4" wear band on both pin and box ends, plus one 1" band on 18 degree shoulder of box.
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Two 3" wear bands on central upsets
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The hard banding is completing flush on both joints and 1/8" oversize on the central upset (full flush on request).
Internal Coating: The HWDP could be internally coated with DPC (Equivalent to TK34) as customers request which are able to prevent corrosion and extend life.
Order Instruction:
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Nominal Size
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Range
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Hard banding type
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Internal coating if required.
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Extra-long tool joints if required
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API Stress relief recess.
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Integral Heavy Weight Dirll Pipe Spec.
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Nom. Size (in)
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Approx. Overall Length (ft)
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Tool Joints
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Tube
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Approx. Weight
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Make-up Torque (lb-ft)
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OD (in)
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ID (in)
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Conn.
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Center upset OD (in)
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Center upsets end (in)
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ID (in)
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Center upset length (in)
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lb/ft
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kg /jts
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3 1/2
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30.5
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4 3/4
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2 1/16
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3 1/2IF
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4
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3 5/8
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2 1/16
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24
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25.3
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350
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11,500
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4
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30.5
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5 1/4
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2 1/2
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4 FH
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4 1/2
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4 1/8
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2 1/2
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24
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29.5
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410
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17,300
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4 1/2
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30.5
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6 1/4
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2 13/16
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4IF
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5
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4 5/8
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2 13/16
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24
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41
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565
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25,500
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5
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30.5
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6 1/2~6 5/8
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3
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4 1/2IF
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5 1/2
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5 1/8
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3
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24
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49.3
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681
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34,000
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5 1/2
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30.5
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7~7 1/4
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3 5/8
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5 1/2 FH
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6
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5 11/16
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3 5/8
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24
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55
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760
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38,000
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6 5/8
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30.5
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8~8 1/4
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4
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6 5/8 FH
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7 1/4
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6 3/4
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4
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24
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70
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970
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55,800
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Integral Spiraled Heavy Weight Drill Pipe
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Nom. Size (in)
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Approx. Overall Length (ft)
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Tool Joints
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Tube
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Approx. Weight
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Make-up Torque (lb-ft)
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OD (in)
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ID (in)
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Conn.
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Center upset OD (in)
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Center upsets end (in)
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ID (in)
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Center upset length (in)
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lb/ft
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kg /jts
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3 1/2
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30.5
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4 3/4
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2 1/16
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3 1/2IF
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4
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3 5/8
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2 1/16
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18.5
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28
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387
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11,500
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4
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30.5
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5 1/4
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2 1/2
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4 FH
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4 1/2
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4 1/8
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2 1/2
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18.5
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33
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457
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17,300
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4 1/2
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30.5
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6 1/4
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2 13/16
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4IF
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5
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4 5/8
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2 13/16
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18.5
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45
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623
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25,500
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5
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30.5
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6 1/2~6 5/8
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3
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4 1/2IF
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5 1/2
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5 1/8
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3
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18.5
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54
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748
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34,000
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5 1/2
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30.5
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7~7 1/4
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3 5/8
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5 1/2 FH
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6
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5 11/16
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3 5/8
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18.5
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62
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858
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38,000
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6 5/8
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30.5
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8~8 1/4
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4
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6 5/8 FH
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7 1/4
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6 3/4
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4
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18.5
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76
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1052
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55,800
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