How to Choose a Tube End Closing Machine: Hydraulic, Auto-Feed, Flat-End and CNC Servo Compared
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A tube end closing machine (tube sealing or spinning machine) cold-forms a metal tube end closed or with a hole. Which model fits depends on the end shape, tube size, volume and how often you change products.
Answer four questions first
- End shape: round, flat, or with a center hole?
- Tube size and material: OD, material, seamed or seamless?
- Volume and labour: how many per day, and is automatic loading needed?
- Changeovers: one size in volume, or many sizes in small lots?
Models compared
| Model | Features | Best for |
|---|---|---|
| TD-31040 hydraulic 3-station | Three stations in turn, round end, optional hole | The most common round closing: gas springs, shock absorbers, furniture, heat pipes |
| TD-351 two-station hydraulic | Two stations, round end | Gas lift and gas spring tubes |
| TD-311 auto-feed | Hopper feeding, closing and unloading | Fixed-size gas spring tube volume with less labour |
| TD-21025 flat-end | Flat closed end, optional hole | Furniture, baby chairs, heat pipes needing a flat end |
| TD-31050 shock absorber | Two-station round end, larger diameters | Shock absorber cylinders |
| TD-382 CNC servo | Closing path set by program, product change by recipe | Mixed models, large tubes or special end shapes |
Selection steps
- Collect the tube specification and closed-end drawing.
- Shortlist models by end shape and volume.
- Send sample tubes for a closing trial.
- Confirm tooling, chucks and spares, then quote.
Why TONG DA
- TONG DA has designed and built tube processing machines since 1989 and runs contract processing on its own machines.
- Tooling is designed to your tube and drawing; sample trials available.
- CE certified; machines sold to the USA, Germany, Turkey, the UK, India, China and more.
FAQ
How many tube sizes can one machine handle?
Change the chuck and forming tools to switch sizes.
Volume is still small – can you close tubes for us?
Yes, TONG DA also offers tube end closing as a contract service.
How do I request a quotation?
Send the tube OD, wall, material, closed-end drawing and estimated quantity to sales@tdco.com.tw and we will reply promptly.