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Henan Jianhui Construction Machinery Co.

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 Henan Jianhui Construction Machinery Co.

China

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Integral Heary Weight Drill
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Product：
Price： Negotiable 
MOQ：  
Total supply：
Delivery time： From the date of payment from the buyer within 3days of delivery
update time： 2025-07-29 01:00  Valid to：Long-term effective
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Product Information

Name:Integral Heary Weight Drill Pipe

Material:AISI 4145H

Standard: API Spec7-1
Product Detail

1.Heavy weight drill pipe, API Heavy weight drill pipe, HWDP
2. Material: AISI 4145H
3. OD: 3 1/2 6 5/8"

A. Integral Heavy Weight Drill Pipe 
Note: The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe.
It is made from premium alloyed steel. Its both tool joints and middle upset are welded hardbands. Technical parameters
meet with API Spec7-1 Standard. 

B. Integral Spiral Heavy Weight Drill Pipe 
Note: Integral spiral heavy weight drill pipe is to extend the central upset of heavy weight drill pipe and to cut spiral groove
on heavy weight drill pipe


Size

OD of body （+1/16，  -1/32）

ID of body

OD of the Joint（+1/16，    -1/32）2

chamferDF

ID of the joint
（+1/8，0）

Joint thread

Elevator thickened end diameter
Deu（0，-0.8mm）

The thickened section diameter
（+1/16，-1/32）
Dcu

Minimum drift diameter gauge diameter

3 1/2

3 1/2

2 1/4

4 3/4（120.7）
（4 7/8，5）

116.3

2 1/4（57.2）

NC38

3 7/8（98.42）

4

2

2 1/16

2 1/16

1 13/16

4

4

2 1/2

5 1/4（133.4）

127.4

2 1/2

NC40

4 3/16

4 1/2

2 1/4

2 9/16

2 9/16（65.09）

2 5/16

4 1/2

4 1/2

2 11/16

6 1/4

145.3

2 11/16

NC46

4 11/16

5

2 7/16

2 3/4

2 3/4

2 1/2

2 13/16

2 13/16

2 9/16

5

5

3

6 5/8

154

3

NC50

5 1/8

5 1/2

2 3/4

5 1/2

5 1/2

3 1/4

7
（7 1/4，
7 1/2）

170.7

3 1/4

5 1/2FH

5 11/16

6

3

3 3/8

3 3/8

3 1/8

3 7/8

3 7/8

3 5/8

4

4

3 3/4

6 5/8

6 5/8

4

8
（8 1/4，
8 1/2）

195.7

4

6 5/8FH

6 15/16

7 1/8

 

 

 

 

 
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