Product Introduction:
API series oil casing
We provide users with all API SPEC 5CT standard steel grades and thread types of oil casing, including: H40、J55、K55、L80 1/9Cr/13Cr、R95、N80 1/Q、C90、T95、C110、P110、Q125 Steel grade, product size covers all outer diameters, wall thickness specifications, and thread types according to API SPEC 5CT standard.
Technical parameters:
specifications | Steel grade and buckle type | Execution standards |
outside diameter/mm（in） | wall thickness/mm | H40 | J55、K55 | L80-1、L80-9Cr、L80-13Cr、R95 | N80-1、N80Q | C90、T95 | C110 | P110 | Q125 |
114.30（4-1/2"） | 5.21 | S | S |
|
|
|
|
|
| API SPEC 5CT |
5.69 |
| S/B |
|
|
|
|
|
|
6.35 |
| S/L/B | L/B | L/B | L/B |
| L/B |
|
7.37 |
|
| L/B | L/B | L/B |
| L/B |
|
8.56 |
|
|
|
|
|
| L/B | L/B |
127.00(5") | 5.59 |
| S |
|
|
|
|
|
|
6.43 |
| S/L/B |
|
|
|
|
|
|
7.52 |
| S/L/B | L/B | L/B | L/B |
| L/B | L/B |
9.19 |
|
| L/B | L/B | L/B |
| L/B | L/B |
11.10 |
|
| L/B | L/B | L/B |
| L/B | L/B |
12.14 |
|
| L/B | L/B | L/B |
| L/B | L/B |
12.70 |
|
| L/B | L/B | L/B |
| L/B | L/B |
139.70(5-1/2") | 6.20 | S | S |
|
|
|
|
|
|
6.98 |
| S/L/B |
|
|
|
|
|
|
7.72 |
| S/L/B | L/B | L/B | L/B |
| L/B |
|
9.17 |
|
| L/B | L/B | L/B |
| L/B |
|
10.54 |
|
| L/B | L/B | L/B |
| L/B | L/B |
168.28(6-5/8") | 7.32 | S | S/L/B |
|
|
|
|
|
|
8.94 |
| S/L/B | L/B | L/B | L/B |
| L/B |
|
10.59 |
|
| L/B | L/B | L/B |
| L/B |
|
12.06 |
|
| L/B | L/B | L/B |
| L/B | L/B |
177.80(7") | 5.87 | S |
|
|
|
|
|
|
|
6.91 | S | S |
|
|
|
|
|
|
8.05 |
| S/L/B | L/B | L/B | L/B |
|
|
|
9.19 |
| S/L/B | L/B | L/B | L/B |
| L/B |
|
10.36 |
|
| L/B | L/B | L/B |
| L/B |
|
11.51 |
|
| L/B | L/B | L/B |
| L/B |
|
12.65 |
|
| L/B | L/B | L/B |
| L/B | L/B |
13.72 |
|
| L/B | L/B | L/B |
| L/B | L/B |
193.68(7-5/8") | 7.62 | S |
|
|
|
|
|
|
|
8.33 |
| S/L/B | L/B | L/B | L/B |
|
|
|
9.52 |
|
| L/B | L/B | L/B |
| L/B |
|
10.92 |
|
| L/B | L/B | L/B |
| L/B |
|
12.70 |
|
| L/B | L/B | L/B |
| L/B | L/B |
14.27 |
|
| L/B | L/B | L/B |
| L/B | L/B |
15.11 |
|
| L/B | L/B | L/B |
| L/B | L/B |
15.88 |
|
| L/B | L/B | L/B |
| L/B | L/B |
Note: S-short circular thread; L-long thread; B-offset ladder thread |
specifications | Steel grade and buckle type | Execution standards |
outside diameter/mm（in） | wall thickness/mm | H40 | J55、K55 | L80-1、L80-9Cr、L80-13Cr、R95 | N80-1、N80Q | C90、T95 | C110 | P110 | Q125 |
219.08（8-5/8"） | 6.71 |
| S |
|
|
|
|
|
| API
SPEC
5CT |
7.72 | S |
|
|
|
|
|
|
|
8.94 | S | S/L/B |
|
|
|
|
|
|
10.16 |
| S/L/B | L/B | L/B | L/B |
|
|
|
11.43 |
|
| L/B | L/B | L/B |
| L/B |
|
12.70 |
|
| L/B | L/B | L/B |
| L/B |
|
14.15 |
|
| L/B | L/B | L/B |
| L/B | L/B |
244.48(9-5/8") | 7.92 | S |
|
|
|
|
|
|
|
8.94 | S | S/L/B |
|
|
|
|
|
|
10.03 |
| S/L/B | L/B | L/B | L/B |
| L/B |
|
11.05 |
|
| L/B | L/B | L/B |
| L/B |
|
11.99 |
|
| L/B | L/B | L/B |
| L/B | L/B |
13.84 |
|
| L/B | L/B | L/B |
| L/B | L/B |
15.11 |
|
| L/B | L/B | L/B |
| L/B | L/B |
273.05(10-3/8") | 7.09 | S |
|
|
|
|
|
|
|
8.89 | S | S/B |
|
|
|
|
|
|
10.16 |
| S/B |
|
|
|
|
|
|
11.43 |
| S/B | S/B | S/B | S/B |
| S/B |
|
12.57 |
|
| S/B | S/B | S/B |
| S/B |
|
13.84 |
|
|
|
| S/B |
| S/B | S/B |
15.11 |
|
|
|
| S/B |
| S/B | S/B |
298.45(11-3/4") | 8.46 | S |
|
|
|
|
|
|
|
9.53 |
| S/B |
|
|
|
|
|
|
11.05 |
| S/B |
|
|
|
|
|
|
12.42 |
| S/B | S/B | S/B | S/B |
| S/B | S/B |
339.72(13-3/8") | 8.38 | S |
|
|
|
|
|
|
|
9.65 |
| S/B |
|
|
|
|
|
|
10.92 |
| S/B |
|
|
|
|
|
|
12.19 |
| S/B | S/B | S/B | S/B |
| S/B |
|
13.06 |
|
| S/B | S/B | S/B |
| S/B | S/B |
406.40(16") | 9.53 | S |
|
|
|
|
|
|
|
11.13 |
| S/B |
|
|
|
|
|
|
12.57 |
| S/B |
|
|
|
|
|
|
473.08(18-5/8") | 11.05 | S | S/B |
|
|
|
|
|
|
508.00(20") | 11.13 | S/L | S/L/B |
|
|
|
|
|
|
12.70 |
| S/L/B |
|
|
|
|
|
|
16.13 |
| S/L/B |
|
|
|
|
|
|
Note: S-short circular thread; L-long thread; B-offset ladder thread |
