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Drill 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
All 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'

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


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