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Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H

  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
  • Heavy Weight Drill Pipe(HWDP)-API 5DP AISI 4142H-4145H
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Product Description
Integral Heavy Weight Drill Pipe
  •  According to API Spec.7, integral heavy weight drill pipe is made of forged or rolled AISI 4142H-4145H. , and formed by hot forging as a whole and fully heat-treated. Tool joints connections and central upset can be with hardbanding.. The types of hard banding include Arnco 100XT and 300XT. All threads are cold rolled, phosphated, and copperized, and they are machined with CNC Lathes –Double –shouldered, including some special threads.
Specification for integral heavy weight drill pipe
Specification
Outer diameter
Inner diameter
connection
body
W/p
K
g
 
Style
Outer diameter
A
DF
mm
Upset
 
D
Center area
mm
B
Bottom
area
mm
 
 
mm
in
mm
in
mm
in
 
I Type (length/p 9300mm)
 
6 5/8FH-
168.3
6 5/8
114.3
4 1/2
6 5/8FH
209.6
8 1/4
195.70
184.2
176.2
965
 
5 1/2FH-
139.7
5 1/2
92.1
3 5/8
5 1/2FH
177.8
7
170.7
152.4
144.5
730
 
NC50-
127.0
5
76.2
3
NC50
168.3
6 5/8
154.0
139.7
130.2
700
 
NC46-
114.3
4 1/2
71.4
2 13/16
NC46
158.8
6 1/4
145.3
127.0
117.5
585
 
NC38-
88.9
3 1/2
52.39
2 1/16
NC38
120.7
4 3/4
116.3
101.6
92.1
370
 
NC31-
73.03
2 7/8
50.8
2
NC31
104.8
4 1/8
100.4
84.1
81.0
220
 
II Type (length/p 13500mm)
 
NC50-II
127.0
5
76.2
3
NC50
168.3
6 5/8
154.0
139.7
130.2
945
 
NC46-II
114.3
4 1/2
71.4
2 13/16
NC46
158.8
6 1/4
145.3
127.0
117.5
790
 
 
 
Tolerance
C
Outer diameter
E
Inner diameter
L
Length
DF
chamfer
Inner and outer thread connection
Upset O.D.
D
B
±0.8
±1.60
±150
±0.4
±0.8
±0.75%D
+0.8
0
 
Standard Met︰General
  Heavy weight drill pipe is an intermediate-weight drill string element. It can effectively reduce the stress between drill pipe and drill collar and provide part of drill pressure.
  The integral heavy weight drill pipe is made from AISI 4145H alloy steel and is fully heat treated. The tool joints of welded heavy weight drill pipe are made from AISI 4145H alloy steel too. All physical properties conform to API Spec 7. Every drill pipe is fully inspected by an ultrasonic unit (at full length and over full section). The standard hardbanding is on the pipe connections and center upset. On the pipe ends, it is 4-inch wide hard metal, while on the center upset, it is 3-inch wide hard metal. The hardbanding is completely flush on either side of the connection. The thickness of the hardbanding is not more than 3.2 mm (l/8 in) compared to that of the adjacent pipe surface. The thickness may be specified by customers.
Product type
● Standard integral heavy weight drill pipe
● Standard welded heavy weight drill pipe
● Spiraled integral heavy weight drill pipe
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