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Wind Tower Flange Ring Blank
Wind Tower Flange Ring Blank
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Wind tower flange ring blanks are typically supplied as rolled seamless rings for further machining into tower connection flanges and other large circular structural components. Compared with fabricated or segmented alternatives, forged ring blanks provide a more reliable base material structure and are suitable for applications where dimensional stability, circularity, and machining allowance are critical.
This ring blank is intended for tower flange, transition flange, or other wind-power connection applications that require large diameters and consistent ring quality. The focus is not on delivering a finished flange, but on providing a forged blank with sound metallurgy and machining allowance for drilling, facing, boring, and final dimensional control. It is especially suitable for projects where large rolled rings are preferred over segmented or welded solutions. For wind energy projects, purchasers usually pay particular attention to ring flatness, out-of-round tolerance, section consistency, and the allowance reserved for final drilling and flange-face machining. This product is therefore better positioned as a forged ring blank rather than a finished flange, because the customer can complete facing, drilling, and dimensional finishing according to the final tower joint design.
We manufacture ring blanks according to drawing, material grade, and required dimensions. The supply scope can cover forged blanks, rough machined rings, or semi-finished ring forgings depending on the customer’s project requirements.
| Parameter | Description |
|---|---|
| Key Features | Flatness control, roundness control, low-temperature impact toughness, bolt hole machining stock |
| Typical Materials | Q355NE / S355NL, 42CrMo4 (yaw), A105 (tower) |
| Size Range | OD 2000~8000mm / Height 200~500mm / Unit Weight ≤25 tons |
| Typical Applications | Wind tower flanges, yaw bearing rings, pitch bearing rings |
| Supply Condition | Normalized / Normalized & tempered / Rough machined (faces + bolt hole layout) |
| Inspection & Docs | UT 100%, low-temperature impact test (-20°C/-40°C), flatness/roundness report, EN 10204 3.1 |
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