Zaɓen API 7K na HUƊU don Aikin Layin Hakowa
Akwai nau'ikan kwalaye uku na DCS Drill Collar Slips: S, R da L. Suna iya ɗaukar kwalayen haƙa rami daga inci 3 (76.2mm) zuwa inci 14 (355.6mm) OD.
Sigogi na Fasaha
| nau'in zamewa | abin wuyan haƙa rami OD | nauyi | inkwano mai hidima Babu | ||
| in | mm | kg | Ib | ||
| DCS-S | 3-46 3/4-8 1/4 | 76.2-101.6 | 51 | 112 | API ko No.3 |
| 4-4 7/8 | 101.6-123.8 | 47 | 103 | ||
| DCS-R | 4 1/2-6 | 114.3-152.4 | 54 | 120 | |
| 5 1/2-7 | 139.7-177.8 | 51 | 112 | ||
| DCS-L | 6 3/4-8 1/4 | 171.7-209.6 | 70 | 154 | |
| 8-9 1/2 | 203.2-241.3 | 78 | 173 | ||
| 8 1/2-10 | 215.9-254 | 84 | 185 | Lamba ta 2 | |
| 9 1/4-11 1/4 | 235-285.7 | 90 | 198 | ||
| 11-12 3/4 | 279.4-323.9 | 116 | 256 | Lamba ta 1 | |
| 12-14 | 304.8-355.6 | 107 | 237 | ||
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