Bell nipples
Bell nipples manufactured per client specifications and oil & gas industry standards. Connection components designed to withstand high mechanical loads and working pressures.
Technical specifications
| Parameter | Detail |
|---|---|
| Alloy | STCV (DIN 28 Ni Cr Mo V 85 steel) with specific microalloying |
| Smelting | Electric furnace — high-purity material, minimal impurities, precise alloy refinement |
| Composition | High silicon content to improve castability and grain refinement |
| Heat treatment 1 | Chemical homogenization at 1200 °C |
| Heat treatment 2 | Cyclic normalization — grain size 5-8 ASTM |
| Heat treatment 3 | Quenching and tempering — peak mechanical properties |
| Maximum hardness | Up to 60 HRC (Rockwell C) |
| Internal structure | High martensitic layer penetration — uniform, long-lasting wear |
| Main application | Brake bell nipples for drilling equipment. Longer service life than standard bells |
| Customization | Final hardness adjustable to client requirement |
Available variants and models
All sizes and series manufactured to client specification.
STCV alloy bell nipples
DIN 28 Ni Cr Mo V 85 steel — up to 60 HRC
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