4.5 Inch Single Piece Spring Bow Centralizer for Casing Pipe
1. Introduction
Single Piece Spring Bow Centralizer are a single / one-piece, slip-on, close tolerance bow spring design, made from low alloy and low carbon (Heat-Treated) steel.
2. Applications
Horizontal and deviated hole sections in which minimal to no starting and running forces are required for casing to reach total depth.
3. Characteristics
• Vigorous, laser cut, heat-treated single material piece
• Zero starting force, and high restoring force
• Manufactured to gauge hole diameter for easy installation
• Maximum stand-off capability provides for low flow area encroachment (ECD)
• Decreases RIH time and increases flow by.
4. Parameters of Single Piece Spring Bow Centralizer
| Specification | Casing Size (mm) | Hole Size (mm) | Inner Diameter (mm) | Outer Diameter (mm) |
| 4-1/2″×6″ | 114 | 152 | 118 | 152 |
| 5″×6-1/2″ | 127 | 165 | 132 | 165 |
| 5-1/2″×6-1/2″ | 140 | 165 | 142 | 165 |
| 5-1/2″×8-1/2″ | 140 | 216 | 142 | 218 |
| 6-5/8″×8-1/2″ | 168 | 216 | 172 | 218 |
| 7″×8-1/2″ | 178 | 216 | 182 | 218 |
| 7″×9-1/2″ | 178 | 241 | 182 | 243 |
| 7-5/8"×9-1/2" | 194 | 241 | 198 | 243 |
| 7-5/8″x9-7/8″" | 194 | 251 | 198 | 253 |
| 9-5/8″×12-1/4″ | 244 | 311 | 249 | 311 |
| 10-3/4"× 12-1/4" | 273 | 311 | 278 | 311 |
| 12 3/4"×17-1/2" | 324 | 445 | 328 | 445 |
| 13-3/8″×17-1/2″ | 340 | 445 | 344 | 445 |
| 14-3/8"×18-3/4" | 365 | 476 | 369 | 476 |
| 16"×20" | 406 | 508 | 410 | 508 |
| 18-5/8"×24" | 473 | 610 | 474 | 610 |
| 20"×26" | 508 | 660 | 512 | 660 |
Our Team
Zhengzhou Maierda Petroleum Equipment Co., Ltd., located in Central China, is a professional supplier of oilfield equipment and accessories.
Our factories have more than 15 years experiences of manufacturing oilfield equipment and accessories.
Our sales team has more than 10 years importing & exporting experiences in oil & gas industry.
Our Products
We are specialized in oilfield equipment and accessories including casing centralizers, float equipment, stage collars, cementing plugs, cementing heads, cement baskets, casing & tubing pipes, sucker rods, drill pipes, drill collars, pumping units, etc.
We are committed to providing high-quality and cost-effective products and services to our customers.
Our Services
We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry.
Let's join hands and work together to create a better future!