| Certification: | API, ISO |
|---|---|
| Surface Treatment: | Spray-Paint |
| Centralizer Type: | Elastic |
| Structure: | Hinged Nonwelded |
| Material: | Cast Steel |
| Type: | Centralizer |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 1. Type: Non Welded Hinged Bow Spring Centralizer
4. Parameters of Hinged Non-welded Bow Spring Centralizer
| Specification | Casing Size (mm) | Hole Size (mm) | Inner Diameter (mm) | Outer Diameter (mm) |
| 4-1/2"×5-1/2" | 114 | 140 | 118 | 140 |
| 4-1/2"×5-3/4" | 114 | 146 | 118 | 146 |
| 4-1/2"×6" | 114 | 152 | 118 | 152 |
| 4-1/2"×6-1/8" | 114 | 156 | 118 | 156 |
| 4-1/2"×6-1/4" | 114 | 159 | 118 | 159 |
| 5"×6" | 127 | 152 | 132 | 152 |
| 5"×6-1/8" | 127 | 156 | 132 | 156 |
| 5"×6-1/4" | 127 | 159 | 132 | 159 |
| 5-1/2"×6-1/2" | 140 | 165 | 144 | 165 |
| 5-1/2"×7" | 140 | 178 | 144 | 178 |
| 5-1/2"×7-1/2" | 140 | 191 | 144 | 191 |
| 5-1/2″×8-1/2″ | 140 | 216 | 142 | 216 |
| 5-3/4"×7-1/2" | 146 | 191 | 150 | 191 |
| 5-3/4"×8-1/2" | 146 | 216 | 150 | 216 |
| 6-5/8"×8-1/2" | 168 | 216 | 172 | 216 |
| 6-5/8"×8-11/16" | 168 | 221 | 172 | 221 |
| 6-5/8"×9-5/8" | 168 | 245 | 172 | 245 |
| 7″×8 1/2″ | 178 | 216 | 182 | 216 |
| 7"×8-11/16" | 178 | 221 | 182 | 221 |
| 7"×9-5/8" | 178 | 245 | 182 | 245 |
| 7-5/8″×8 1/2″ | 194 | 216 | 198 | 216 |
| 7-5/8"×8-11/16" | 194 | 221 | 198 | 221 |
| 7-5/8"×9-5/8" | 194 | 245 | 198 | 245 |
| 9-5/8″×11-5/8″ | 245 | 295 | 249 | 295 |
| 9-5/8″×12-1/4″ | 244 | 311 | 249 | 311 |
| 12-3/4"×15-1/2" | 324 | 394 | 328 | 394 |
| 13-3/8"×15-1/2" | 340 | 394 | 344 | 394 |
| 13 3/8×17 1/2 | 340 | 445 | 344 | 445 |
About Us
Maierda, located in Central China, is a professional supplier of petroleum equipment and tools.
Our factory has more than 15 years' experience in the R&D, production, sales and service of oilfield equipment and machinery.
Our sales team has more than 10 years importing & exporting experiences in the oil & gas industry.
Main Products
We are mainly engaged in oil well equipment and tools including various casing centralizers (bow centralizer, spring centralizer, single piece centralizer, solid body centralizer, rigid centralizer, semi-rigid centralizer, hinged centralizer, non-welded centralizer, welded centralizer, composite centralizer, nylon centralizer, stamped centralizer, positive centralizer, roller centralizer, slip-on centralizer, aluminum centralizer, zinc alloy centralizer), stop collar, sucker rod centralizer, tubing centralizer, drill pipe centralizer, etc.
We also provide some other competitive products in the oil & gas field including float equipment (collar and shoe), cementing plugs, cementing heads, stage collars, cement baskets, hammer unions, polished rod clamps, polished rod, couplings & crossovers for casing, tubing, sucker rod, polished rod, etc.
Our Services
We are committed to providing high-quality and cost-effective products and services to our customers.
We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry.
Hope to have a good cooperation with you!
Suppliers with verified business licenses
Audited Supplier 
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