The API standard single bow spring centralizer for casings is a high-quality centralizer made of special alloy steel. It is hot formed in a controlled heat treatment plant to ensure uniform hardness throughout. This centralizer meets the specifications and performance index outlined in API Spec 10D.
When in use, the woven centralizer is connected using a pin, and when not in use, the unfolded centralizer can be stacked flatly for easy storage and transportation.
Here are the key features of the API standard single bow spring centralizer for casings:
1) The bow springs are made of spring steel that has undergone heat treatment and hardened tempering. This ensures the springs have the proper and consistent characteristics needed for effective centralization.
2) The end collar hinges are folded inward to minimize collar stretch, which commonly occurs when centralizers encounter tapers in certain types of pipe connections.
3) The end collar features a reinforcing rib that is stamped into it. This adds strength and helps maintain its round configuration during transport.
4) Various spring bow heights are available to accommodate different casing-to-hole configurations.
5) Centralizers with built-in stop devices and uncommon sizes can be obtained upon request.
Overall, the API standard single bow spring centralizer for casings is designed to provide efficient and reliable centralization of casings during wellbore operations.
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.
