Nonwelded Bow Spring Centralizer
Nonwelded bow-spring centralizers are available in the hinged style only. The bow springs of this centralizer are attached to the end rings without welding. The centralizer bow end is connected to the end rings with a locking tab that bears the load force on the centralizer. The centralizers are supplied in hinged segments joined by hinge pins in each segment. All nonwelded centralizers meet or exceed the requirements of API Specification 10D, which dictates the minimum restoring and maximum starting forces for centralizers for various casing/hole size combinations.
The Single Piece Welded Bow Spring Centralizer
It is newly designed integrated steel flexible Centralizer used to centralize casing during the cementing stage of oil wells. Single Piece Centralizer meet or exceed API 10D specifications.
Single Piece Centralizer is designed for tight tolerance applications. It performs very well in open hole as well as in cased hole. Single Piece Centralizer Combine The Highest Restoring Force With The Lowest Starting Force.
Size chart of Stop Collar
| Specification(in) | ID(mm) | OD(mm) | Holding Force(kn) |
| 13 3/ 8” | 338 | 350 | 40 |
| 10 3/ 4” | 272 | 284 | 40 |
| 9 5/ 8” | 245 | 257 | 40 |
| 8 1/ 8” | 206 | 218 | 40 |
| 7 5/ 8” | 193 | 285 | 30 |
| 7” | 177 | 189 | 30 |
| 5 1/ 2” | 139 | 151 | 30 |
| 5” | 126 | 138 | 24 |
| 4 1/ 2” | 114 | 126 | 24 |
| 담당자 : | Lisa |
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