|
|
|
|
| Non-Magnetic Drill Collars |
|
|
| Model No.︰ | - |
| Brand Name︰ | - |
| Country of Origin︰ | - |
| Unit Price︰ | - |
| Minimum Order︰ | - |
|
|
|
|
|
Non-magnetic Drill Collars
· According to API Spec.7 and SY/T5144, the non-magnetic drill collars are made of low carbon stainless steel, which are researched and developed independently by our technical personnel. All threads are cold rolled, and they are machined with CNC Lathes –Double –shouldered, including some special threads.
Standard size
|
No.
|
Outer diameter
|
Internal diameter
|
Length
mm
|
DF
mm
|
Bending strength ratio
|
|
mm
|
in
|
mm
|
in
|
|
NC23-31
|
79.4
|
3 1/8
|
31.8
|
1 1/4
|
9150
|
76.2
|
2.57：1
|
|
NC26-35
|
88.9
|
3 1/2
|
38.1
|
1 1/2
|
9150
|
82.9
|
2.42：1
|
|
NC31-41
|
104.8
|
4 1/8
|
50.8
|
2
|
9150 or 9450
|
100.4
|
2.43：1
|
|
NC35-47
|
120.7
|
4 3/4
|
50.8
|
2
|
9150 or 9450
|
114.7
|
2.58：1
|
|
NC38-50
|
127.0
|
5
|
57.2
|
2 1/4
|
9150 or 9450
|
121．0
|
2.38：1
|
|
NC44-60
|
152.4
|
6
|
57.2
|
2 1/4
|
9150 or 9450
|
144.5
|
2.49:1
|
|
NC44-60
|
152.4
|
6
|
71.4
|
2 13/16
|
9150 or 9450
|
144.5
|
2.84:1
|
|
NC44-62
|
158.8
|
6 1/4
|
57.2
|
2 1/4
|
9150 or 9450
|
149.2
|
2.91:1
|
|
NC46-62
|
158.8
|
6 1/4
|
71.4
|
2 13/16
|
9150 or 9450
|
150.0
|
2.63:1
|
|
NC46-65
|
165.1
|
6 1/2
|
57.2
|
2 1/4
|
9150 or 9450
|
154.8
|
2.76:1
|
|
NC46-65
|
165.1
|
6 1/2
|
71.4
|
2 13/16
|
9150 or 9450
|
154.8
|
3.05:1
|
|
NC46-67
|
171.4
|
6 3/4
|
57.2
|
2 1/4
|
9150 or 9450
|
159.5
|
3.18:1
|
|
NC50-67
|
171.4
|
6 3/4
|
71.4
|
2 13/16
|
9150 or 9450
|
159.5
|
2.37:1
|
|
NC50-70
|
177.8
|
7
|
57.2
|
2 1/4
|
9150 or 9450
|
164.7
|
2.54:1
|
|
NC50-70
|
177.8
|
7
|
71.4
|
2 13/16
|
9150 or 9450
|
164.7
|
2.73:1
|
|
NC50-72
|
184.2
|
7 1/4
|
71.4
|
2 13/16
|
9150 or 9450
|
169.5
|
3.12:1
|
|
NC56-77
|
196.8
|
7 3/4
|
71.4
|
2 13/16
|
9150 or 9450
|
185.3
|
2.70:1
|
|
NC56-80
|
203.2
|
8
|
71.4
|
2 13/16
|
9150 or 9450
|
190.1
|
3.02:1
|
|
6 5/8REG
|
209.6
|
8 1/4
|
71.4
|
2 13/16
|
9150 or 9450
|
195.7
|
2.93:1
|
|
NC61-90
|
228.6
|
9
|
71.4
|
2 13/16
|
9150 or 9450
|
212.7
|
3.17:1
|
|
7 5/8REG
|
241.3
|
9 1/2
|
76.2
|
3
|
9150 or 9450
|
223.8
|
2.81:1
|
|
NC70-97
|
247.6
|
9 3/4
|
76.2
|
3
|
9150 or 9450
|
232.6
|
2.57:1
|
|
NC70-100
|
254.0
|
10
|
76.2
|
3
|
9150 or 9450
|
237.3
|
281:1
|
|
8 5/8REG
|
279.4
|
11
|
76.2
|
3
|
9150 or 9450
|
266.7
|
2.84:1
|
Dimensional tolerance
|
range for outer diameter
|
O.D. Tol.
|
I.D. Tol.
|
Length
|
DF
|
|
mm
|
in
|
|
≤88.9
|
≤3 1/2
|
+1.2
0
|
+1.6
0
|
＋152.4
|
±0.4
|
|
＞88.9~114.3
|
＞3 1/2~4 1/2
|
+1.6
0
|
|
＞114.3~139.7
|
＞4 1/2~5 1/2
|
+2.0
0
|
|
＞139.7~165.1
|
＞5 1/2~6 1/2
|
+3.2
0
|
|
＞165.1~215.9
|
＞6 1/2~8 1/2
|
+4.0
0
|
|
＞215.9~241.3
|
＞8 1/2~9 1/2
|
+4.8
0
|
|
＞241.3
|
＞9 1/2
|
+6.4
0
|
Mechanical property
|
Range for outer diameter
|
Yield Strengthσ0.2
MPa
|
Tensile Strengthσb
MPa
|
Elongationδ4
%
|
|
|
mm
|
in
|
|
79.4~171.4
|
3 1/8~6 3/4
|
≥758
|
≥827
|
≥18
|
|
177.8~279.4
|
7~11
|
≥689
|
≥758
|
≥20
|
|
Magnetic property (magnetic field = 1×105/4πA/m)
1. Ur＜1.010
2. ΔB≤0.05μT
1.Average : Ur＜1.010
2. Magnetic field gradient : ΔB≤0.05μT
|
|
|
|
|
|
|
|
| API 5CT J55,K55,N80-1,N80-Q,L80-1,L80-9Cr,L80-13Cr,C90,T95,P110,Q125-Casing Pipe |
| USD $ 1350 |
|
|
|
|
|
|
|
