ALL Products

TD-382 NC servo closing machine for the tube ends of hollow automotive stabilizer bars (anti-roll bars). The forming roller is driven by servo X and Y axes and the dome radius is set freely in the program, so large-diameter, heavy-wall tube is cold spin-closed with no heating and no weld seam. It is used for stabilizer bar production in a Japanese automotive parts supply chain, and the same machine also closes large shock absorber cylinders.

TD-351 (also called TD-31050) is a two-station (OD Ø15–50 mm) hydraulic tube sealing machine for gas lift and gas spring cylinders: it cold roll-spins the tube end closed or with a center hole, two stations in turn, one operator, no heat, weld or plug.

CNC tube grooving machine for gas spring, tailgate strut and shock absorber manufacturers. TD-627 is TONG DA’s servo inner grooving machine. It draws the longitudinal oil grooves on the bore of gas spring (tailgate strut, gas lift), shock absorber and damper cylinders that set opening speed and damping. Groove length, depth and feed are programmed on the servo slide, so a product change is a recipe recall, not a machine reset; automatic tube feeding, one operator. With the TD-31040 closing machine it forms a complete gas spring cylinder line.

Large shock absorber cylinders and hydraulic or pneumatic cylinder tubes need heavy-wall, pressure-tight closed ends, often with a center hole for the rod or a flat face for mounting. The TD-382 NC servo closing machine cold roll-forms large-diameter heavy-wall tube in programmed stages into a one-piece closed end; hole diameter, flat size and dome radius are program parameters set freely by the servo X/Y axes, so one machine runs different bores and different end shapes.

Tube shops and contract processors face a different closed-end shape on every order: another radius, another flat, a hole or no hole. A hydraulic closing machine can adjust the dome radius too and is best for fixed parts in high volume; when shapes keep changing, an NC servo machine is easier. The TD-382 NC servo closing machine keeps the end shape in a program: recall a program to change customer, change the jaw set and guide tube only when the OD changes, and take on many more parts with one machine.

TD-724 is a four-station rotary gas spring press-fit and edge folding machine, the same machine type as TD-AT155: the operator loads and unloads at station 1, station 2 press-fits the components pneumatically, station 3 folds the tube end closed hydraulically, and the part returns to station 1. PLC touch control; cylinder OD Ø15/18/22/24.8/28 mm, length 150–500 mm.

TD-YL506 is an automatic-feeding oil filling machine for gas springs and tailgate struts. It dispenses a precise amount of oil into each cylinder before closing and gas charging. Manual/Auto switch, with adjustable rotation, travel and filling speed; it works alongside our closing and press-fit/folding machines in a gas spring line.

TD-31040 closes the tube ends of automotive airbag components such as inflator housings and gas storage tubes. The tube end is spin-formed cold into a one-piece closed end, with no weld and no plug, and the wall thickens naturally at the closure. Range Ø10–40 mm, wall 0.8–2.0 mm; other sizes evaluated by sample.

TD-31050 hydraulic dome-type closing machine for hollow stabilizer bars, torsion bars and torsion beam tubes. Tube OD Ø15–50 mm; the tube end is cold spin-closed in one piece, with no heating, welding or plug, and no weld seam at the closure.

TD-31050 hydraulic dome-type closing machine for heat exchanger, header, condenser and coil tubes. Tube OD Ø15–50 mm; the end is cold spin-closed in one piece, with no welded cap or plug, no heating and no oxide scale.

TD-21025 hydraulic flat-end closing machine for heat pipes, copper tubes and heat exchanger tubes. Tube OD Ø10–25 mm; the end is cold spin-closed flat or with a hole, with no heating, welding or plug.

TD-21025 hydraulic flat-end closing machine for furniture, chair, stroller and outdoor chair tubes. Tube OD Ø10–25 mm; the end is cold spin-closed flat, replacing plastic plugs and welding, with a smooth end that does not scratch.

TD-332 (also called TD-311) automatic tube closing machine: a single-head TD-31040 closing machine with automatic loading and unloading — tubes are fed, closed and ejected automatically, so one operator can run several machines. Tube OD Ø15–28 mm; cold spin closing, fully closed or with a hole, with no heating, welding or plug.

TD-91528 two-station end fitting machine tightens gas spring and tailgate strut end fittings on two stations and sets the fitting angle. Suited to long tubes and multi-size gas springs; semi-automatic touch control.

The TD-627 servo inner grooving machine presses lengthwise damping grooves into the inner wall of tailgate strut and gas spring cylinders. It makes one groove, two grooves at 180° or three grooves at 120°, up to three grooves each at its own depth, and several segments on one line. Groove length, depth and width are set on the touch screen. The length, depth and number of grooves decide how fast the strut opens and closes.

Machines for the whole gas spring (gas strut, tailgate strut, lift support) cylinder line: tube cutting, damping groove, ring groove, cylinder bottom closing, oil filling, press-fit and edge folding, gas charging and end fitting locking. Buy one station or plan the full line. Made in Taiwan since 1989.

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.

Tube end closing for garden chairs, loungers, parasol frames and rattan sofas: the aluminium or steel tube end is cold-spun into a one-piece dome with no welding and no heat. No plug to fall out, no water inside the tube; a center hole can be left for drainage or feet. OD 10–40 mm.

Spare parts for TONG DA closing, grooving and rolling machines: clamping jaw sets, guide tubes, hydraulic chucks, collets, bearings and seals, TD-382 servo slide units, and tooling for each tube size. Parts for older machines too; send the serial number and a photo for a quotation.

Tube end closing subcontracting on TONG DA's own machines in Tainan: dome, flat or center-hole ends, cold spin-closed in one piece with no welding and no plug. Samples first, then production.

Tube end reducing subcontracting on TONG DA's own TD-876 machine in Tainan: reduced ends for push-fit joints, tapered ends, two-step reductions and reduced-then-closed ends. Samples first.

Roll grooving and beading subcontracting on TONG DA's own machines in Tainan: ring grooves, beads, belt grooves and decorative grooves on steel, stainless, aluminium and copper tube, chip-free. Inner damping grooves too. Samples first.

Tube cutting subcontracting on TONG DA's own TD-41860 machine in Tainan: chip-free roll cutting to length with no kerf loss and little inner burr, small stainless tubes included. Reducing, grooving and closing can follow in the same plant.

Machines for shock absorber and damper cylinders: cold spin closing of the cylinder bottom (TD-31050, TD-382), roll grooving, inner grooving, special machines for rebound valve nut tightening and base valve spin riveting, and piston rod preparation through partners. Samples on your tube first.

End closing machines for heat pipes, heat exchanger tubes, headers and manifolds, condenser and coil tubes and heater tubes: TD-21025 flat ends, TD-31040 / TD-31050 dome ends, TD-382 for thick wall and programmable shapes. Cold spin closing in one piece, no weld, no plug, no oxide scale. Samples on your tube first.

TD-31040 closes the bottom end of gas spring, gas lift, tailgate strut and shock absorber cylinders by cold roll spinning: a fully sealed dome, or a dome with a center hole for the rod or end fitting. No welding, no plug. Typical cylinders are Ø12–28 mm cold-drawn precision steel tube; the machine covers Ø10–40 mm. TONG DA also supplies the inner grooving machine (TD-627 / TD-61530), component pressing and edge folding machine (TD-AT155), lock nut machine (TD-91528) and edge folding/punching machine (TD-738), so a complete gas spring cylinder line can come from one supplier.

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 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-91528 is a pneumatic lock nut machine for gas springs and tailgate struts: it tightens end fittings quickly and sets the fitting angle. Semi-automatic touch control with tighten / loose-hang modes, for cylinder OD 15–28 mm.

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 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.

Stabilizer bar and torsion beam tube closing machine. TD-382 is TONG DA’s NC servo tube end closing machine. The forming rollers are driven by servo X and Y axes and follow a programmed path, so the dome radius can be set freely and flat area and center hole are program settings too; a product change is a program recall. Built for large-diameter, heavy-wall tube and for parts with demanding or varied end shapes: automotive stabilizer bars and torsion beams, large shock absorber cylinders, hydraulic cylinder tubes, industrial gas springs. Used in a Japanese automotive supply chain, running in plants in Japan, Thailand and China.

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-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.

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.

Production line equipment for hollow stabilizer bars, torsion bars and torsion beams: weld-seam inner drilling with engraving, tube expanding, hot upsetting of tube ends, end turning and NC end closing. Built to each part, exported overseas for automotive mass production.

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.

TD-311 (also called TD-332) is a single-station auto-feeding tube closing machine for gas spring and gas lift cylinders Ø15–28 mm, wall 1.0–2.0 mm, length 100–500 mm. Tubes are fed from a hopper, closed and unloaded automatically; the end is cold roll-spun into a dome with adjustable arc and hole – no weld or plug. Hydraulic clamping and PLC touch control for high-volume production.

TD-876 is TONG DA’s tube end reducing (swaging / shrinking) machine. It reduces the outer diameter of a metal tube end for telescoping and push-fit joints, or as a forming step before end closing. Contract tube reducing is also available on our own machines.

TD-41860 is a hydraulic 2-in-1 tube cutting and roll grooving machine: it roll-cuts metal tube and rolls external grooves, beads or reductions on the same machine. Chip-free cold rolling for steel, stainless, copper and aluminum tube, used for conveyor rollers, gas springs, furniture and medical tubes.

TD-41335 is a hydraulic axial tube roll grooving machine. It cold-rolls external grooves, beads and reductions on metal tube with no roll marks and stable depth; grooving wheels change quickly. For steel, stainless, copper and aluminum tube in conveyor rollers, gas springs, furniture and sports equipment.

TD-21025 is a patented hydraulic flat-end tube closing machine. It cold roll-spins a metal tube end into a flat closed bottom or one with a center hole – no heating, welding or plastic plug, with a smooth, safe finish. For furniture, baby chairs and strollers, heat pipes and heat exchanger tubes; PLC touch control.

TD-31040 closes tube ends on furniture, chairs, strollers, cribs, outdoor loungers, wheelchairs, crutches, telescopic poles and lighting. The open end of a steel or aluminum tube is cold roll-spun into a smooth dome, replacing plastic end plugs and welded caps: nothing to fall out, no sharp edge, no grinding before plating or coating. Machine range Ø10–40 mm, wall 0.8–2.0 mm; heavy-wall or special tubes can be evaluated on sample.

The WHC-0301M hydraulic fine boring machine bores the end of a metal tube to an accurate diameter and smooth finish, removing mill tolerance and the internal weld bead so a bearing, guide bush, piston or mating tube fits correctly. Hydraulic clamping and feed; the boring tool is changed to suit the target bore. Used on gas spring and hydraulic cylinder tubes, drive shaft tubes, fitness equipment and furniture sleeves. Sold and serviced by TONG DA.

The WHC horizontal hydraulic notching machine mills an arc-shaped (saddle) notch in the end of a round tube to match the OD of the tube it joins, so the two weld with a tight, even seam. Hydraulic clamping and feed; the cutter is changed to suit the mating tube diameter. Used on furniture frames, motorcycle racks, fitness equipment, garden tool and hammer handles. Sold and serviced by TONG DA.

The WHC-88-29 double-end notching machine clamps a round tube once and mills saddle notches at both ends at the same time, for cross rails, braces and bars that weld to uprights at each end. Each head has its own cutter size and angle; both notches stay aligned without turning the part over. Used on furniture, bed frames, fitness equipment and motorcycle racks. Sold and serviced by TONG DA.

TONG DA Precision (Tainan, Taiwan, since 1989) offers contract tube processing for steel, stainless and aluminum tube: cutting, swaging, end closing, inner grooving, roll grooving, flattening, punching and flaring. We build our own tube processing machines and run OEM production on them, so special parts get dedicated tooling or a purpose-built machine in house.

TONG DA processes medical device tubes on its own closing, cutting, reducing and grooving machines: wheelchair, walker, rehab equipment, medical bed and telescopic pole tubes, with spun closed ends replacing plastic plugs.

TONG DA offers PLC programming for customers: control design for new machines, PLC and touch screen retrofits for older machines, and integration of feeders and robots into automated lines, with HMI design, commissioning and training.