Industrial tube parts tend to be larger in diameter, thicker in wall and loaded by pressure or fatigue. TONG DA cold roll closing has no weld seam and a thickened wall at the closure, which suits these parts; grooving, inner grooving and cutting are done with rollers, chip-free.
| Product | Operation | Machine |
|---|---|---|
| Industrial gas springs, dampers | Cylinder closing, inner grooving, component pressing | TD-31040, TD-31050, TD-627, TD-AT155 |
| Hydraulic and pneumatic cylinder tubes | End closing, center hole, grooving | TD-31050, TD-382, TD-41335 |
| Heat exchangers, heat pipes | Stainless and copper tube closing | TD-31040, TD-21025 |
| Conveyor rollers, roller tubes | Grooving, beading, roll cutting | TD-42815, TD-41860 |
| Fitness and playground equipment | Closing, grooving, notching, punching | TD-31040, TD-42001, notching machines |
| Compressed gas bottles, gas fittings | End closing, shrinking | TD-31040, TD-876 |
For diameters beyond the standard range, very heavy walls, or several operations combined in one machine, TONG DA designs a special purpose machine to the drawing; design, build and trial run take place in our Tainan plant. Large-diameter and heavy-wall stainless jobs have been done in production and can be trialed on samples.
Send the part drawing, tube OD × wall × material and annual volume; TONG DA recommends a standard machine, a special purpose machine or contract processing.