Junan API125CT casing collar manufacturing standards, the materials used are steel grade:
J55, N80, P110 and so on. Seamless steel pipe or casing collar set of forged steel production,
thread connection types are: short round thread, long round thread, buttress thread and so on.
Coupling specifications: 41 / 2 "~ 20"
round thread casing coupling
|
Specification |
OD |
Minimum length |
Bore diameter |
Bearing wear width |
||
|
in |
mm |
Short coupling |
Long coupling |
|||
|
4-1/2 |
114.30 |
127.00 |
158.75 |
177.80 |
116.68 |
3.97 |
|
5 |
127.00 |
141.30 |
165.10 |
196.85 |
129.38 |
4.76 |
|
5-1/2 |
139.70 |
153.67 |
171.45 |
203.20 |
142.08 |
3.18 |
|
6-5/8 |
168.28 |
187.71 |
184.15 |
222.25 |
170.66 |
6.35 |
|
7 |
177.80 |
194.46 |
184.15 |
228.60 |
180.18 |
4.76 |
|
7-5/8 |
193.70 |
215.90 |
190.50 |
234.95 |
197.64 |
5.56 |
|
8-5/8 |
219.08 |
244.48 |
196.85 |
254.00 |
223.04 |
6.35 |
|
9-5/8 |
244.48 |
269.88 |
196.85 |
266.70 |
248.44 |
6.35 |
|
10-3/4 |
273.05 |
298.45 |
203.20 |
- |
277.02 |
6.35 |
|
11-3/4 |
298.45 |
323.85 |
203.20 |
- |
302.42 |
6.35 |
|
13-3/8 |
339.72 |
365.12 |
203.20 |
- |
343.69 |
5.56 |
|
16 |
406.40 |
431.80 |
228.60 |
- |
411.96 |
5.56 |
|
18-5/8 |
473.08 |
508.00 |
228.60 |
- |
478.63 |
5.56 |
|
20 |
508.00 |
533.40 |
228.60 |
292.10 |
513.56 |
5.56 |
Buttress thread casing coupling
|
Specification |
OD |
Minimum length |
Bore diameter |
Bearing wear width |
||
|
in |
mm |
Standard Coupling |
Special clearance couplings |
|||
|
4-1/2 |
114.30 |
127.00 |
123.82 |
225.42 |
117.86 |
3.18 |
|
5 |
127.00 |
141.30 |
136.52 |
231.78 |
130.56 |
3.97 |
|
5-1/2 |
139.70 |
153.67 |
149.22 |
234.95 |
143.26 |
3.97 |
|
6-5/8 |
168.28 |
187.71 |
177.80 |
244.48 |
171.83 |
6.35 |
|
7 |
177.80 |
194.46 |
187.32 |
254.00 |
181.36 |
5.56 |
|
7-5/8 |
193.70 |
215.90 |
206.38 |
263.52 |
197.23 |
7.94 |
|
8-5/8 |
219.08 |
244.48 |
231.78 |
269.88 |
222.63 |
9.52 |
|
9-5/8 |
244.48 |
269.88 |
257.18 |
269.88 |
248.03 |
9.52 |
|
10-3/4 |
273.05 |
298.45 |
285.75 |
269.88 |
276.61 |
9.52 |
|
11-3/4 |
298.45 |
323.85 |
- |
269.88 |
302.01 |
9.52 |
|
13-3/8 |
339.72 |
365.12 |
- |
269.88 |
343.28 |
9.52 |
|
16 |
406.40 |
431.80 |
- |
269.88 |
410.31 |
9.52 |
|
18-5/8 |
473.08 |
508.00 |
- |
269.88 |
476.99 |
9.52 |
|
20 |
508.00 |
533.40 |
- |
269.88 |
511.91 |
9.52 |
