Direct-flow rigid centralizers are designed for installation on the casing string and ensure trouble-free lowering of the pipe string into the well and centering it relative to the borehole walls. The centralizer is made according to the casing pipe and well dimensions from steel by casting. The centralizer has a tubular body with a hole for installation on the casing pipe. Fixing the position of the centralizer is made by restrictive rings with screw or welding to ensure free rotation of the centralizer on the lowered casing.
Specifications
| Model | Nominal diameter, mm | Full diameter, mm | Height, mm | Start load, kN | Weght, kg | Radial load, kN |
| BSC-140-165 | 144 | 165 | 420 | 0.5 | 4.2 | 3.5-5.9 |
| BSC-140-191 | 144 | 191 | 420 | 0.5 | 4.2 | 3.5-5.9 |
| BSC-140-216 | 144 | 216 | 420 | 0.5 | 4.2 | 3.5-5.9 |
| BSC-168-216 | 172 | 216 | 420 | 0.5 | 4.8 | 4.2-7.1 |
| BSC-168-220 | 172 | 222 | 420 | 0.5 | 4.8 | 4.2-7.1 |
| BSC-168-222 | 172 | 222 | 420 | 0.5 | 4.8 | 4.2-7.1 |
| BSC-168-245 | 172 | 245 | 420 | 0.5 | 4.8 | 4.2-7.1 |
| BSC-178-216 | 182 | 216 | 420 | 0.5 | 5.1 | 5.0-8.7 |
| BSC-178-220 | 182 | 222 | 420 | 0.5 | 5.1 | 5.0-8.7 |
| BSC-178-222 | 182 | 222 | 420 | 0.5 | 5.1 | 5.0-8.7 |
| BSC-178-245 | 182 | 245 | 420 | 0.5 | 5.1 | 5.0-8.7 |
| BSC-194-216 | 198 | 216 | 420 | 0.5 | 5.4 | 5.0-8.7 |
| BSC-245-295 | 249 | 295 | 420 | 0.5 | 6.2 | 7.4-12.8 |
| BSC-245-311 | 249 | 311 | 420 | 0.5 | 6.2 | 7.4-12.8 |
| BSC-324-394 | 330 | 394 | 420 | 0.5 | 7.8 | 10.0-17.4 |
| BSC-340-394 | 346 | 394 | 420 | 0.5 | 8.2 | 10.9-19.0 |
| BSC-340-445 | 346 | 445 | 420 | 0.5 | 8.2 | 10.9-19.0 |