Precision-bent tubing for heat exchanger coils that directs fluid flow through complex paths while maintaining structural integrity and thermal efficiency.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Ovality | <8% of nominal diameter | |
| Bend Radius | 1.5D to 5D (where D is tube diameter) | |
| Wall Thinning | <15% of original thickness | |
| Angle Tolerance | ±0.5° to ±2° | |
| Straight Length | Minimum 2D before/after bend | |
| Surface Roughness | Ra ≤ 3.2 μm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
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The minimum bend radius typically ranges from 1.5D to 3D (where D is tube diameter), depending on material, wall thickness, and application requirements. Tighter bends increase pressure drop and stress concentration.
Bending causes wall thinning on the outer radius (up to 15% reduction) and thickening on the inner radius. Proper tooling and process control minimize thinning to maintain pressure rating and corrosion allowance.
Common methods include: laser scanning for dimensional accuracy, ultrasonic testing for wall thickness verification, visual inspection for surface defects, and pressure testing for leak integrity.
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