Industrial

Tube in industrial equipment

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.

TD-31040 closing machine for heat exchanger tubes
TD-31040 closing machine for heat exchanger tubes		TD-41335 axial roll grooving machine
TD-41335 axial roll grooving machine		TD-41860 hydraulic tube cutting machine
TD-41860 hydraulic tube cutting machine

Typical products and operations

ProductOperationMachine
Industrial gas springs, dampersCylinder closing, inner grooving, component pressingTD-31040, TD-31050, TD-627, TD-AT155
Hydraulic and pneumatic cylinder tubesEnd closing, center hole, groovingTD-31050, TD-382, TD-41335
Heat exchangers, heat pipesStainless and copper tube closingTD-31040, TD-21025
Conveyor rollers, roller tubesGrooving, beading, roll cuttingTD-42815, TD-41860
Fitness and playground equipmentClosing, grooving, notching, punchingTD-31040, TD-42001, notching machines
Compressed gas bottles, gas fittingsEnd closing, shrinkingTD-31040, TD-876

When a standard machine is not enough

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. Special sizes can be trialed on samples.

How to start

Send the part drawing, tube OD × wall × material and annual volume; TONG DA recommends a standard machine, a special purpose machine or contract processing.

Related videos

TD-31040 Heat Exchanger Header Pipe Closing OD21.3×2.5t
TD-31040 Heat Exchanger Header Pipe Closing OD21.3×2.5t		TD-41335 Hydraulic Axial Roll Grooving & Beading Machine
TD-41335 Hydraulic Axial Roll Grooving & Beading Machine		TD-41860 Hydraulic Tube Cutting Machine – Rotary Roll Cutting, Burr-Free
TD-41860 Hydraulic Tube Cutting Machine – Rotary Roll Cutting, Burr-Free

More machine videos on our YouTube channel: youtube.com/@closingmachine

Conveyor rollers

Cutting, belt grooves, bearing-seat beads and reduced ends for conveyor roller and idler tubes: see conveyor roller tube machines.

Conveyor Roller Tube Machines | Cutting, Belt Grooves, Beading & End Reducing for Roller and Idler Tubes
Conveyor Roller Tube Machines | Cutting, Belt Grooves, Beading & End Reducing for Roller and Idler Tubes
Machines for conveyor roller, gravity roller and idler tubes: cut to length, roll belt grooves, bead or groove the bearing seat and reduce the tube end. Cold roll forming with no chips and no tool marks, for steel, stainless and aluminium tube. Samples on your tube before you buy.
TD-42815 Gas Spring Tube Roll Grooving Machine | External Grooves on Tailgate Strut Cylinders
TD-42815 Gas Spring Tube Roll Grooving Machine | External Grooves on Tailgate Strut Cylinders
TD-42815 is a hydraulic roll grooving machine for tailgate strut and gas spring cylinders. It rolls locating grooves or beads on the outside of the cylinder tube with stable depth and no roll marks; quick tooling change suits multi-size gas spring production.
TD-61530 Hydraulic Inner Grooving Machine | Oil Grooves in Gas Spring & Tailgate Strut Tubes
TD-61530 Hydraulic Inner Grooving Machine | Oil Grooves in Gas Spring & Tailgate Strut Tubes
TD-61530 is a hydraulic inner grooving machine that presses damping (oil) grooves inside tailgate strut, gas spring and shock absorber cylinders to set extension speed – up to 2 grooves of the same depth. Groove length is set on the screen; width and depth are adjustable, with standardized quick-change tooling. For servo program control see TD-627.
TD-738 Tube Edge Folding & Punching Machine | Gas Spring Cylinder End Folding and Hole Punching
TD-738 Tube Edge Folding & Punching Machine | Gas Spring Cylinder End Folding and Hole Punching
TD-738 folds the edge of gas spring and tailgate strut cylinder tube ends and punches holes on one machine, a forming step before gas spring assembly.
TD-AT155 Gas Spring Assembly Machine | Press-Fit Components & Fold-Close the Tube End
TD-AT155 Gas Spring Assembly Machine | Press-Fit Components & Fold-Close the Tube End
TD-AT155 press-fits gas spring and tailgate strut components into the cylinder tube and fold-closes the tube end on one machine. Combine it with TONG DA closing, inner grooving and lock nut machines for a complete gas spring production line.
TD-31040 Heat Pipe & Heat Exchanger Tube End Closing Machine | Stainless & Copper Tube Sealing
TD-31040 Heat Pipe & Heat Exchanger Tube End Closing Machine | Stainless & Copper Tube Sealing
TD-31040 closes the ends of heat pipes, heat exchanger tubes and shell-and-tube bundles. Stainless steel and copper tubes are cold roll-spun into a one-piece closed end with no weld seam and no plug; the wall thickens naturally at the closure. Machine range Ø10–40 mm, wall 0.8–2.0 mm; heavy-wall or special tubes can be evaluated on sample.
TD-31040 Pipe End Closing Machine | Tube Spinning & Roll Closing, Hydraulic 3-Station
TD-31040 Pipe End Closing Machine | Tube Spinning & Roll Closing, Hydraulic 3-Station
Pipe end closing machine / tube spinning machine for gas spring, tailgate strut and shock absorber manufacturers. TD-31040 is TONG DA’s patented hydraulic 3-station tube end closing machine. It cold-forms the open end of a metal tube into a fully closed dome, or a dome with a center hole of specified diameter, by roll spinning. No heating, no welding, no plastic plugs. Tube OD 10–40 mm, wall 0.8–2.0 mm, in carbon steel, stainless steel, copper and aluminum. Three stations cycle in turn, so one operator runs the machine without special skill. Typical products: gas spring and tailgate strut cylinders, shock absorber tubes, heat exchanger tubes, furniture and stroller frames.
TD-42001 Custom Tube Roll Forming Machine | Grooving, Beading, Reducing & Cutting (Special Purpose)
TD-42001 Custom Tube Roll Forming Machine | Grooving, Beading, Reducing & Cutting (Special Purpose)
TD-42001 is a special purpose axial tube roll forming machine designed around the customer’s part. Grooving, beading, reducing and roll cutting can be combined on one machine for tubes that a standard machine cannot finish in one setup. Send a part drawing for evaluation.
TD-31050 Shock Absorber Tube Closing Machine | Two-Station Pipe End Closing, Ø15–50 mm
TD-31050 Shock Absorber Tube Closing Machine | Two-Station Pipe End Closing, Ø15–50 mm
TD-31050 is a patented hydraulic two-station arc-top closing machine for tube OD Ø15–50 mm and wall 0.8–3.0 mm. It cold roll-spins the tube end fully closed or with a center hole – no heating, welding or plastic plug. PLC touch control, inverter spindle speed and a strengthened forming unit make it suited to shock absorber cylinders and larger tubes.
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