Conventional One Piece Centralizer (Single Piece Bow Spring Centralizer)
Our Conventional One Piece Centralizers (Single Piece Bow Spring Centralizers) are made from special high strength steel (65Mn steel), which has more excellent hardness and spring action than other types of centralizers.
Features and benefits
· Zero start and running forces
· Close tolerance
· Offer better standoff
· Suitable for vertical well, horizontal well and highly deviated wells
When ordering, please specify:
Casing size
Hole size
If impossible, the required length of the one piece centralizer
Parameters of Conventional One Piece Centralizers (Single Piece Bow Spring Centralizers)
| 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 |
About Us
Zhengzhou Maierda Petroleum Equipment Co., Ltd. is a manufacturer and supplier of casing accessories, cementing tools and downhole tools. Our factories have many years experiences of manufacturing oilfield equipment and accessories. We have over 10 years importing & exporting experiences in oil & gas industry.
Our main products:
1. Casing centralizers: bow spring centralizers, rigid centralizers, semi-rigid centralizers, one piece centralizers, polymer centralizers, hollow vane centralizers, aluminum centralizers, roller centralizers, slip on centralizers, hinged centralizers, welded/non-welded centralizers, stop collars, etc.
2. Cementing tools: float equipment (float collar, float shoe, guide shoe), cementing plugs, cement baskets, cement heads, stage collars, etc.
3. Downhole tools: casing & tubing couplings, pup joints, sucker rod guides (centralizers), sucker rods, drill collars, etc.
We are committed to providing high-quality and cost-effective products and services to our customers in oilfield industry.
Hope to establish a long-term partnership with you!
