Downhole equipment api 10d hinged pins welded bow spring casing centralizer
Api 10d specification
Uniform annular clearance
Application: For vertical and slightly deviated applications
Minimizes differential sticking
Can be rotated or reciprocated with the casing
Sizes range from 4-1/2" to 20", custom size is avaliable.
Features of hinged pins bow spring casing centralizer
1, welded centralizer has more restoring force than non welded centralizer.
2, integral hinge folded on the inside stay intact even under extreme stress.
3, the end collars are designed with a reinforcing rib stamped into the end collar to give maximum structural toughness.
4, shipped in half assembled condition for economy in shipping and storage cost.
5, with special iron phosphate coating process to prevent from rust
6, coated with special polyester powder.
Centrlizers parameter:
Non welded centralizer specification(mm) |
Specification |
Bow type |
Hoop ring internal diameter(d) |
Hoop ring wall thickness(t) |
Hoop ring height(h) |
Total length(l) |
Max. O. D. Size |
Bow spring(n) |
5-1/2"*8-1/2" |
Double bow |
142-148 |
3-5 |
90-120 |
650±50 |
225±5 |
5 |
7"*9-5/8" |
Double bow |
181-186 |
3-5 |
90-120 |
650±50 |
255±5 |
6 |
7"*8-1/2" |
Single bow |
181-186 |
3-5 |
90-120 |
650±50 |
235±5 |
6 |
8-5/8"*12-1/4" |
Single bow |
223-228 |
3-5 |
90-120 |
650±50 |
330±5 |
8 |
9-5/8"*12-1/4" |
Single bow |
250-255 |
3-5 |
90-120 |
650±50 |
330±5 |
8 |
10-3/4"*12-1/4" |
Single bow |
274-276 |
3-5 |
90-120 |
650±50 |
330±5 |
9 |
13-3/8"*17-1/2" |
Single bow |
342-347 |
3-5 |
90-120 |
650±50 |
450±5 |
11 |
18-5/8"*24" |
Single bow |
476±1 |
3-5 |
90-120 |
600±50 |
610±5 |
12 |
20"*26" |
Single bow |
510±1 |
3-5 |
90-120 |
600±50 |
660±5 |
12 |
Welded centralizer specification(mm) |
5-1/2"*8-1/2" |
Single bow |
142-148 |
5-7 |
50-60 |
650±50 |
225±5 |
5 |
5-1/2"*8-1/2" |
Double bow |
142-148 |
5-7 |
50-60 |
650±50 |
225±5 |
5 |
5-1/2"*8-1/2" |
Cyclone single bow |
142-148 |
5-7 |
50-60 |
650±50 |
225±5 |
6 |
6"*8-1/2" |
Double bow |
154-118 |
5-7 |
50-60 |
650±50 |
225±5 |
5 |
13-3/8"*17-1/2" |
Single bow |
342-349 |
8 |
50-60 |
580 |
450±5 |
6 |
20"*26" |
Single bow |
510-518 |
8 |
50-60 |
650±50 |
670±5 |
10 |