What Is Tube End Reducing? Uses, Methods and Points to Watch
Tube end reducing (swaging, necking) shrinks the outer diameter of one end of a metal tube. The reduced end can slide into another tube of the same size, forming a joint without a separate connector.
What it is used for
- Telescoping and push-fit joints: telescopic poles, crutches, furniture frames, tent poles.
- Forming before closing: reduce first, then close or fit a connector.
- Tapered ends: tapered tube ends for chair legs or appearance.
Points to watch
- The larger the reduction, the harder the forming; large reductions may need several steps.
- The tube must be ductile enough, and any weld seam must be sound.
- Joint fit depends on the actual sizes of both tubes and is tuned accordingly.
TONG DA reducing machine and contract service
The TD-876 tube reducing machine reduces and necks tube ends. Factories with steady volume can buy the machine; for small volumes or new products, TONG DA can reduce the tubes on its own machines and also cut, close and groove them.
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
Which materials can be reduced?
Carbon steel, stainless steel, aluminium and copper tubes, evaluated by diameter, wall thickness and reduction.
Can you make samples first?
Yes – please send samples or drawings.
How do I request a quotation?
Send the tube material, OD and wall, reduced size and quantity to sales@tdco.com.tw and we will reply promptly.