Zhongshi brand Spiral Rigid centralizer has distinguished features:
Spiral Rigid Centralizer is a cast steel solid centralizer that is suitable for use in open hole consolidated formations or cased hole applications.
The outside diameter is generally 5" to 25" smaller then the nominal hole size making it suitable for applications where medium to large annular conditions exist.
Long life span and economic in price
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Non-weld casing centralizer
| Model (in) |
Hooping In-Dia. (mm) |
Hooping thickness (mm) |
Hooping Height (mm) |
Total Length (mm) |
Max. Out-Dia. (mm) |
Spring Pieces |
| 5-1/2*8-1/2 |
142-148 |
3-5 |
90-120 |
650±50 |
225±5 |
5 |
| 7*9-5/8 |
181-186 |
3-5 |
90-120 |
650±50 |
255±5 |
6 |
| 7*8-1/2 |
181-186 |
3-5 |
90-120 |
650±50 |
235±5 |
6 |
| 8-5/8*12-1/4 |
223-228 |
3-5 |
90-120 |
650±50 |
330±5 |
8 |
| 9-5/8*12-1/4 |
250-255 |
3-5 |
90-120 |
650±50 |
330±5 |
8 |
| 10-3/4*12-1/4 |
274-276 |
3-5 |
90-120 |
650±50 |
330±5 |
9 |
| 13-3/8*17-1/2 |
342-347 |
3-5 |
90-120 |
650±50 |
450±5 |
11 |
| 18-5/8*24 |
476±1 |
3-5 |
90-120 |
600±50 |
610±5 |
12 |
| 20*26 |
510±1 |
3-5 |
90-120 |
600±50 |
660±5 |
12 |
Weld casing centralizer
| Model (in) |
Hooping In-Dia. (mm) |
Hooping Thickness (mm) |
Hooping Height (mm) |
Total Length (mm) |
Max. Out-Dia. (mm) |
Spring Pieces |
| 5-1/2*8-1/2 |
142-148 |
5-7 |
50-60 |
650±50 |
225±5 |
5 |
| 6*8-1/2 |
154-158 |
5-7 |
50-60 |
650±50 |
255±5 |
5 |
| 13-3/8*17-1/2 |
342-349 |
8 |
50-60 |
580 |
450±5 |
6 |
| 20*26 |
510-518 |
8 |
50-60 |
650±50 |
670±5 |
10 |
