We are a factory specializing in the manufacture and export of drill pipes(API oil drill pipes,flat drill pipes,water drill pipes,non-dig drill pipes and geographical drill pipes), drill collars and drilling joints (API and other standerds) in China for more than six years. We have profuse designs with series quality grade, and expressly, our price is very competitive because we are manufactory, we are the source
we have got the citification of the ISO9001 and API , we are always insisting on the slogan of "Creativity, Quality First, Satisfy Clients".
We are confident that we can provide all the drilling equipment which you need! As a very active manufactures, we can also develop new designs according to our costomers.The specifications of drill pipes we can supply according to the API are as following:
|
Size
(inch)
|
RSD
|
Weight
Designation |
Calculated Plain-End weight
|
Outside Diam.
|
Wall Thickness
|
|||
|
Lb/ft
|
kg/m
|
Inch
|
mm
|
Inch
|
mm
|
|||
|
2-3/8
|
NC26
|
6.65
|
6.26
|
9.32
|
2.375
|
60.3mm
|
0.280
|
7.11 mm
|
|
2-7/8
|
NC36
|
10.40
|
9.72
|
14.48
|
2.875
|
73.0mm
|
0.362
|
9.19 mm
|
|
3-1/2
|
NC38
|
9.50
|
8.81
|
13.12
|
3.500
|
88.9mm
|
0.254
|
6.45 mm
|
|
3-1/2
|
NC38
|
13.30
|
12.31
|
18.34
|
3.500
|
88.9mm
|
0.368
|
9.35 mm
|
|
3-1/2
|
NC38
|
15.50
|
14.63
|
21.79
|
3.500
|
88.9mm
|
0.449
|
11.40 mm
|
|
4
|
NC40
|
14.00
|
12.93
|
19.26
|
4.000
|
101.6mm
|
0.330
|
8.38 mm
|
|
4-1/2
|
NC46NC50
|
13.75
|
12.24
|
18.23
|
4.500
|
114.3 mm
|
0.271
|
6.88 mm
|
|
4-1/2
|
NC46NC50
|
16.60
|
14.98
|
22.31
|
4.500
|
114.3 mm
|
0.337
|
8.56 mm
|
|
4-1/2
|
NC46NC50
|
20.00
|
18.69
|
27.84
|
4.500
|
114.3 mm
|
0.430
|
10.92 mm
|
|
5
|
NC50
|
16.25
|
14.87
|
22.15
|
5.000
|
127.0 mm
|
0.296
|
7.52 mm
|
|
5
|
NC50
|
19.50
|
17.93
|
26.71
|
5.000
|
127.0 mm
|
0.362
|
9.19 mm
|
|
5
|
NC50
|
25.60
|
24.03
|
35.79
|
5.000
|
127.0 mm
|
0.500
|
12.70 mm
|
In order to build up business cooperation ASAP,pls your specific models to my early reply for you.We are fully prepared to fulfill your need from your order and supply the products in strict compliance with national and international standards to reach and even outclass our esteemed customers request.