Founded in 1997,Puyang Zhongshi Group as certified API 10D casing centralizers manufacturer in China,specializes in design and manufacturing of bow spring centralizers,solid rigid centralizers and stop collars at competitive price.
We have 9 factories, more than 500 employees, competitive prices of our casing accessories like bow spring centralizer, solid rigid centralizer,float equipment, cementing plug etc.
We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001.
1.Casing non weld centralizercentralizers have welded and non-welded type, is to help center the casing in the wellbore and allows uniform cement flow around the casing to help protect it at all points. Designed with high restoring force and low starting&running force.
2.End collars are designed with self-locking action, which are easy to assemble.
3.Size from 4 1/2'' to 20'', any special sizes or combination can available on request.
4.Including turbulence generating designs that help clean the annulus and distribute the cement more evenly.
5.At the same time,our spring bow of single piece centralizer can bear pressure repeatly.
| Bow Spring Casing centralizer |
| Model(in) | Hooping In-Dia.(mm) | Hooping height(mm) | Length(mm) | Max. Out-Dia.(mm) | Bow type | Bow Spring Pieces |
| 5-1/2*8-1/2 | 142-148 | 90-120 | 650±50 | 225±5 | Singer and Double | 5 |
| 7*9-5/8 | 181-186 | 90-120 | 650±50 | 255±5 | Singer and Double | 6 |
| 7*8-1/2 | 181-186 | 90-120 | 650±50 | 235±5 | Singer and Double | 6 |
| 8-5/8*12-1/4 | 223-228 | 90-120 | 650±50 | 330±5 | Singer and Double | 8 |
| 9-5/8*12-1/4 | 250-255 | 90-120 | 650±50 | 330±5 | Singer and Double | 8 |
| 10-3/4*12-1/4 | 274-276 | 90-120 | 650±50 | 330±5 | Singer and Double | 9 |
| 13-3/8*17-1/2 | 342-347 | 90-120 | 650±50 | 450±5 | Singer and Double | 11 |
| 18-5/8*24 | 476±1 | 90-120 | 600±50 | 610±5 | Singer and Double | 12 |
| 20*26 | 510±1 | 90-120 | 600±50 | 660±5 | Singer and Double | 12 |