Specifications
Item:oilfield casing centralizerDiameter:7inch
Material: carbon steel and 65Mn
Use: well drilling
Certificate: API 10D
API 10D 7" casing centralizer with Spring Bow
This slip-on centralizer consists of 2pc slip-on long creased steel collars with straight bow springs that are welded onto the outside of the slip-on end collars. These centralizers are normally run between two stop collars or over one slip-on stop collar to provide the casing / liner a smooth bearing surface. Sizes are available for all standard casing / hole sizes. Recommended for use with all standard casing grades.
API 10D 7" casing centralizer with Spring Bow
Premium quality Bows are made of special alloy steel and hot formed in totally controlled heat treatment plant to achieve the uniform hardness all over. Spec and performance index of bow spring casing centralizer meet API Spec 10D.
The woven centralizer is connected by pin when in use, the unfolded centralizer can be stacked flatly for convenient storage and transportation.
API 10D 7" casing centralizer with Spring Bow
1) Bow springs made of spring steel which has been heat teated and hardened tempered to ensure proper and consistent spring characteristics.
2) End collar hinges are folded toward inside. This way will minimize the collar stretch taht tends to occur when centralizers encounter tapers, commonly found in certain type of pipe connections.
3)A reinforcing rib stamped into the end collar. This way will strengthen and preserve it's round configuration during transport.
4)Several different spring bow heights that are available to accommodate most of casing-to-hole configuration.
API 10D 7" casing centralizer with Spring Bow
Non-weld oilfield casing centralizer
| Model (in) | Hooping In-Dia. (mm) | Hooping thickness (mm) | Hooping Height (mm) | Total Length (mm) | Max. Out-Dia. (mm) | Spring Pieces |
| 5-1/2*8-1/2 | 142-148 | 3-5 | 90-120 | 650±50 | 225±5 | 5 |
| 7*9-5/8 | 181-186 | 3-5 | 90-120 | 650±50 | 255±5 | 6 |
| 7*8-1/2 | 181-186 | 3-5 | 90-120 | 650±50 | 235±5 | 6 |
| 8-5/8*12-1/4 | 223-228 | 3-5 | 90-120 | 650±50 | 330±5 | 8 |
| 9-5/8*12-1/4 | 250-255 | 3-5 | 90-120 | 650±50 | 330±5 | 8 |
| 10-3/4*12-1/4 | 274-276 | 3-5 | 90-120 | 650±50 | 330±5 | 9 |
| 13-3/8*17-1/2 | 342-347 | 3-5 | 90-120 | 650±50 | 450±5 | 11 |
| 18-5/8*24 | 476±1 | 3-5 | 90-120 | 600±50 | 610±5 | 12 |
| 20*26 | 510±1 | 3-5 | 90-120 | 600±50 | 660±5 | 12 |
Oilfield Weld casing centralizer
API 10D 7" casing centralizer with Spring Bow
API 10D 7" casing centralizer with Spring Bow
API 10D 7" casing centralizer with Spring Bow-Welded Centralizer
| Model (in) | Hooping In-Dia. (mm) | Hooping Thickness (mm) | Hooping Height (mm) | Total Length (mm) | Max. Out-Dia. (mm) | Spring Pieces |
| 5-1/2*8-1/2 | 142-148 | 5-7 | 50-60 | 650±50 | 225±5 | 5 |
| 6*8-1/2 | 154-158 | 5-7 | 50-60 | 650±50 | 255±5 | 5 |
| 13-3/8*17-1/2 | 342-349 | 8 | 50-60 | 580 | 450±5 | 6 |
| 20*26 | 510-518 | 8 | 50-60 | 650±50 | 670±5 | 10
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