Heavy Weight Drill Pipe

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.

The wear-resistance hardbanding is standard on tool joints connections and central upset. Hardbanding is made by an automatic machine after preheating the pipe and is followed by stress relieving.

The Type of handbanding include Iron-Matrix powder alloy, Tungsten Carbide particle, and Arnco 100XT.

Standard Bands:

one 4" wear band on both pin and box ends, plus one 1" band on 18 degree shoulder of box.
Two 3" wear bands on central upsets
The hardbanding 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:

Nominal Size
Range
Hardbanding type
Internal coating if required.
Extra-long tool joints if required
API Stress relief recess.


Heavy Weight Drill PipeHeavy Weight Drill Pipe

Integral Heavy Weight Dirll Pipe Spec. 

Nom. Size (in) Approx. Overall Length (ft) Tool Joints Tube Approx. Weight Make-up Torque (lb-ft)
OD (in) ID (in) Conn. Center upset OD (in) Center upsets end (in) ID (in) Center upset length (in) lb/ft kg /jts
3 1/2 30.5 4 3/4 2  1/16 3 1/2IF 4 3 5/8 2  1/16 24 25.3 350 11,500
4 30.5 5 1/4 2 1/2 4 FH 4 1/2 4 1/8 2 1/2 24 29.5 410 17,300
4 1/2 30.5 6 1/4 2 13/16 4IF 5 4 5/8 2 13/16 24 41 565 25,500
5 30.5 6 1/2~6 5/8 3 4 1/2IF 5 1/2 5 1/8 3 24 49.3 681 34,000
5 1/2 30.5 7~7 1/4 3 5/8 5 1/2 FH 6 5 11/16 3 5/8 24 55 760 38,000
6 5/8 30.5 8~8 1/4 4 6 5/8 FH 7 1/4 6 3/4 4 24 70 970 55,800

Integral Spiraled Heavy Weight Drill Pipe

Nom.
Size
(in)
Approx.
Overall
Length (ft)
Tool Joints Tube Approx. Weight Make-up
Torque
(lb-ft)
OD (in) ID (in) Conn. Center upset OD (in) Center upsets end (in) ID (in) Center upset length (in) lb/ft kg /jts
3 1/2 30.5 4 3/4 2  1/16 3 1/2IF 4 3 5/8 2  1/16 18.5 28 387 11,500
4 30.5 5 1/4 2 1/2 4 FH 4 1/2 4 1/8 2 1/2 18.5 33 457 17,300
4 1/2 30.5 6 1/4 2 13/16 4IF 5 4 5/8 2 13/16 18.5 45 623 25,500
5 30.5 6 1/2~6 5/8 3 4 1/2IF 5 1/2 5 1/8 3 18.5 54 748 34,000
5 1/2 30.5 7~7 1/4 3 5/8 5 1/2 FH 6 5 11/16 3 5/8 18.5 62 858 38,000
6 5/8 30.5 8~8 1/4 4 6 5/8 FH 7 1/4 6 3/4 4 18.5 76 1052 55,800