API Standard Single Bow Spring Centralizer for Casings:
Casing centralizer
1. Introduction of casing centralizer
The casing centralizers are used to protect sucker rod to reduce wearing.
2. Material
2.1. Super strength spring steel
2.2. ASTM A395 ductile iron ,or equivalent international series number.
2.3. Polyester centralizer
2.4. Aluminum alloy
3. Structure
3.1. One or double bow without welding
3.2. Rigid type
3.3. Roller type
4. Specification
4″×5-7/8″, 4-1/2″×6-1/8″, 5″×61/2″, 5-1/2″×8-1/2″, 7″×8-1/2″, 7-5/8″×9-1/2″ , 8-5/8″×10-5/8″, 9-5/8″×12-1/4″, 10-3/4″×14-3/4″, 13-3/8″×17-1/2″, 16″×20″, 20″×26″
Casing sentralizer specifications:
| Model (in) | Hooping In-Dia. (mm) | Hooping thickness (mm) | Total length (mm) | Max.Out-Di (mm) | Amount of spring (mm) |
| 5-1/2" x 8-1/2" | 142-148 | 3-5 | 650±50 | 225±5 | 5 |
| 7" x 9-5/8" | 181-186 | 3-5 | 650±50 | 255±5 | 6 |
| 7" x 8-1/2" | 181-186 | 3-5 | 650±50 | 235±5 | 6 |
| 8-5/8 x 12-1/4" | 223-228 | 3-5 | 650±50 | 330±5 | 8 |
| 9-5/8 x 12-1/4" | 250-255 | 3-5 | 650±50 | 330±5 | 8 |
| 10-3/4 x 12-1/4" | 274-276 | 3-5 | 650±50 | 330±5 | 9 |
| 13-3/8"x17-1/2" | 342-347 | 3-5 | 650±50 | 450±5 | 11 |
| 18-5/8"x24" | 475-477 | 3-5 | 600±50 | 610±5 | 12 |
| 20"x26" | 509-511 | 3-5 | 600±50 | 660±5 | 12 |
Company Information
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. Our group have 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.
We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.
