DRILL PIPE USA™

TEL: 713-594-7447

Rocksprings, Texas

Email: pipe@drillpipe.us

 

Drill Pipe USA distributes virtually all sizes of drill pipe for all your drilling needs. In many of the more popular sizes,

We import from the best mills around the world.

Please let us quote your next drill string and we look forward to doing business with you.

 

 

Drill Collars

 

DPU's drill collars are made of self-designed premium alloy steel bar and pipe materials, and heat treated by continuous gas furnace to meet the mechanical requirements in API Specs.   In addition, to meet customers' special order, DPU also provide collars with impact power greater than 80 Joule, and collars with impact power greater than 110 Joule. DPU supplier utilizes double end trepanner to machine drill collars, which could provide collars with consistently even and balanced wall thickness.

Drill Collars

Slick collars

Spriral collars

Flex collars  

2、Elevator, Slip Recess or Slip Holes

Unless otherwise specified, those are machined according to API RP7G recommendation.

3、Stress Relief Groove

4、Cold Rolling of Thread Roots

5、Make In & Break Out

6、 Hardbanding DPU (QHD) fabricate customer specified hardbanding materials. Besides DPU standard hardbanding material HB9000, we are one of the certified applicators of ANRCO 100XT, 300XT, etc.

7、Thread Surface Process

All threads will be treated with phosphate coating process to improve wearness and prevent galling.

Specification Tables:

Drill Collars

OD

ID

Connections

31FT Collars
Est. Weight (kg/pc)

inch

mm

inch

mm

4-1/8

104.78

2
2-1/4

50.80
57.15

NC31,NC35
NC35

519

4-3/4

120.65

2
2-1/4

50.80
57.15

NC35,
NC35,NC38(3 1/2IF)

698
655

6-1/4

158.75

2-1/4
2-13/16

57.15
71.44

NC46(4 IF)
NC46(4 IF)

1269
1157

6-1/2

165.1

2-1/4
2-13/16

57.15
71.44

NC46(4 IF)
NC46(4 IF)

1381
1270

7

177.8

2-1/4
2-13/16

57.15
71.44

NC50(4 1/2IF)
NC50(4 1/2IF)

1632
1535

8

203.2

2-13/16
3

71.44
76.20

6 5/8REG
6 5/8REG

2092

9

228.6

2-13/16
3

71.44
76.20

7 5/8REG
7 5/8REG

2720

9-1/2

241.3

3

76.20

7 5/8REG

3069

10

254

3

76.20

NC70

3390

11

275.4

3

76.20

NC77

4171

 

 

 

 

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Drill Pipe USA™ is a Trademark of Wesley Holley RBI Industries LLC.