Drill Pipe

Drill PipeDrill PipeDrill Pipe

- Drill Pipes are strictly fabricated according to API 5D (for pipe body) and SPEC 7 (for tool joint).

- Connections are phosphatized or copperized in order to reduce the possibility of connection galling.

- Hard banding will be provided if necessary. There are many kinds of hard banding that we can provide such as iron-matrix power Alloy, Arnco-100 XT.

- Internal coating is provided in order to prolong its service life including TK34, TK34P, and DPC.

- Press steel protectors are provided for pin and box tool joint.

- API monogram can be used.

- Packing mode: plastic frame system.

Production Process of Drill Pipe

Pipe Body Friction Welding Induction Post-weld Heat-Treating Non-destructive Examination
Pipe Body Friction Welding Induction Post-weld Heat-Treating Non-destructive Examination

Standard Size and Connections of Drill Pipes

OD  Grade Wall Thickness  Upset Ends,forWeld-on ToolJoints(see note)  Tool Joint
inch mm inch mm
2 7/8 73 E.X.G.S 0.217 5.51 EU NC31
0.308 7.82 EU NC31.NC26
0.362 9.19 EU NC31
3 1/2 88.9 E.X.G.S 0.254 6.45 EU NC38
0.368 9.35 EU NC38.NC40
0.449 11.4 EU NC38.NC40
4 101.6 E.X.G.S 0.262 6.65 EU.IU NC40.NC46
0.33 8.38 EU.IU NC40.NC46
0.38 9.65 EU.IU NC40.NC46
4 1/2 114.3 E.X.G.S 0.271 6.88 EU.IEU NC46.NC50
0.337 8.56 EU.IEU NC46.NC50
0.43 10.92 EU.IEU NC46.NC50
0.5 12.7 EU.IEU NC50
0.55 13.97 EU.IEU NC50
0.575 14.61 EU.IEU NC50
5 127 E.X.G.S 0.296 7.52 IEU NC50
0.362 9.19 IEU NC50
0.5 12.7 IEU NC50.5 1/2FH
5 1/2 139.7 E.X.G.S 0.304 7.72 IEU 5 1/2 FH
0.361 9.17 IEU 5 1/2 FH
0.415 10.54 IEU 5 1/2 FH
6 152.4 E.X.G.S 0.324 8.23 IEU 5 1/2 FH
0.38 9.65 IEU 5 1/2 FH
6 5/8 168.3 E.X.G.S 0.33 8.38 IEU 5 1/2 FH
0.362 9.19 IEU 5 1/2 FH

Note:
1. EU - External Upset; IEU - Internal & External Upset.
2. Internal coating and hardbanding option upon order.

Pup Joint

Pup JointAll pump joints are made from modified alloy steel heat-treated to a Brinell Hardness range of 285–341 with a Charpy V-Notch minimum impact strength of 40 ft-lbs at 70°F guaranteed to one inch below the surface. Connections can be cold rolled after machining, if requested. All connections are phos-coated to prevent galling during initial make-up.
Nominal size: 3 1/2''OD ~ 6~ 5/8'' OD, Length: 5', 10', 15', 20'.

Pup Joint

Technical Specificatons fo Pup Joints

Nominal Size
A(in)
Tool Joint OD
B(in)
Tool Joint ID
in
Pin TJ Tong
C(in)
Box TJ Tong
D(in)
Conn.
2-3/8 3-3/8 1-1/2 9 12 NC26
2-7/8 4-1/8 2-1/8 9 11 NC31
3-1/2 4-3/4 2-9/16 10 12-1/2 NC38
3-1/2 5 2-1/8 10 12-1/2 NC38
4 5-1/4 2-11/16 9 12 NC40
4-1/2 6-1/4 3 9 12 NC46
5 6-1/2 3-1/4 9 12 NC50
5 6-5/8 2-3/4 9 12 NC50
5 6-5/8 3-1/4 9 12 NC50
5-1/2 7-1/4 3-1/2 8 10 5-1/2 FH
5-1/2 7-1/2 3-1/2 10 12 5-1/2 FH
6-5/8 8-1/2 4-1/4 8 10 6-5/8 FH
6-5/8 8 5 8 10 6-5/8 FH