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304 Seamless Condenser Tube Loops Bent and Flared
High-precision CNC bending of 4mm 304 stainless seamless tubing into condenser loops - ten custom pieces, swept round and end-flared for fittings.
Key Specifications
- Materials
- 304 stainless seamless tube, 4 mm OD x 3 mm ID
Key Features
- Thin-wall tube swept without wrinkles
- Large rectangular loop held flat
- Ends flared to accept fittings
- Seamless tube for pressure service
What Makes Bending Hollow Tube Different from Solid Rod?
Short answer: The wall can collapse. This video shows 4mm 304 stainless seamless tube bent into rectangular condenser loops on a CNC machine - internal support keeps the thin wall round, then the ends are flared for fittings.
What the Video Demonstrates
| Step | Operation | Result |
|---|---|---|
| 1 | Tube on bend die | Wall supported |
| 2 | Corners swept | Round loops |
| 3 | Ends flared | Fitting-ready |
| 4 | Hand check | Bore proven open |
Key Applications
- Condenser and evaporator lines
- Heat-exchanger tube bundles
- Hydraulic and pneumatic runs
Seamless vs Welded Tube for Bending
| Welded seam tube | Seamless (shown) |
|---|---|
| Seam splits at bend | Uniform wall bends |
| Leak risk | Pressure safe |
FAQ
What tube sizes do you bend? 4mm to 22mm OD common HVAC and hydraulic sizes.
Can you supply the tube stock? Yes - material sourcing included with the order.
Interested in this machine?