Expanding
As a pipe expanding machine it enlarges the tube end so one pipe slips over another for a socket joint, common on exhaust and HVAC lines.

Expanding, Reducing & Shaping Pipe Ends
Hydraulic tube end forming machines for pipe end forming on automotive exhausts, furniture, air conditioning and other tube ends, with forming and clamping both hydraulically controlled.
Hydraulic tube end forming machines for expanding, reducing and shaping pipe ends, with forming and clamping both controlled by hydraulic. Widely used for automotive exhausts, furniture, air conditioning and other end forming applications, with multi-station tooling for several operations in sequence.
The number is the maximum tube OD in mm. Larger models add working stroke and force for bigger pipe. Figures are the rated values for each model.
| Model | Max FittingΦ × wall, mm | Working Strokemm | Hydraulic PressureMPa | Working Speed | Weightkg | Dimensionscm |
|---|---|---|---|---|---|---|
| SG40-2 | Φ40 × 2.0 | 120 | 14 | 110 mm / 3–4 s | 800 | 190 × 50 × 130 |
| SG60-2 | Φ60 × 2.0 | 120 | 14 | 120 mm / 5–6 s | 1200 | 210 × 60 × 140 |
| SG80-2 | Φ80 × 2.0 | 200 | 14 | 130 mm / 5–6 s | 1800 | 260 × 75 × 145 |
| SG120-2 | Φ110 × 2.0 | 200 | 14 | 140 mm / 8–9 s | 2500 | 350 × 90 × 180 |
All models use a two-station design with forming and clamping both hydraulically controlled. Working speed varies with pipe size, wall thickness and end shape, so confirm the final tooling for your part with our engineers before ordering.

End forming reshapes the last few centimeters of a tube so it fits, seals or joins the next part. The tube is clamped, a hydraulic ram drives a shaped die onto the end, and the metal takes the die’s form, expanded, reduced or flared. Multi-station tooling runs several of these steps in sequence.
The tube is held firmly so only the end is free to be formed against the die.
A hydraulic ram pushes the forming punch or die onto the tube end with steady force.
The end is expanded, reduced, flared or beaded to match the required fitting.
Multi-station tooling repeats with different dies so one end gets several forms in order.
One machine, several end forms. These are the operations Telhoo SG end formers perform, alone or combined on multi-station tooling.
As a pipe expanding machine it enlarges the tube end so one pipe slips over another for a socket joint, common on exhaust and HVAC lines.
As a tube reducing machine it shrinks the end to a smaller diameter or a taper, so tubes step down or fit into a fitting.
Flares the end into a cone or rolls a bead for hose clamps, seals and secure connections.
Several dies in sequence give one tube end a combined form in a single, repeatable load.
Match the model to your tube diameter and the number of forms your part needs.
The number is the max tube OD. SG40-2 takes Φ40, SG60-2 takes Φ60, SG80-2 takes Φ80 and SG120-2 takes Φ110 mm.
One simple end form runs on a single station. Several forms per end point to multi-station tooling.
Larger models add working stroke (up to 200 mm) and force for bigger, longer end forms.
End forming usually follows cutting and bending. See tube bending & fabrication for the full flow.
Forming dies are matched to your tube material so the end shapes cleanly without cracking or marking.
Hardened forming dies for exhaust and structural tube ends that hold shape and seal.
Smooth, polished dies expand and flare soft aluminum and copper HVAC tube without tearing.
Matched punches and stops control thin-wall and profile ends so they form without wrinkling.
Send your tube spec and the end form you need, and we supply the matching forming dies for the SG model.
Telhoo end forming machines expand, reduce and shape tube ends in mild steel, stainless steel, copper and aluminum for these industries worldwide.


Muffler and exhaust pipe, seat frames and chassis tube in round and profile sections.
Air-conditioning coils, heat pump lines and copper or aluminum refrigeration tube.
Chair and table frames, gym racks and equipment tube in round and profile sections.
Thick-wall carbon steel pipe for marine, offshore and structural fabrication.
Serpentine and coil tube for boilers, heat exchangers and power equipment.
Stair rails, guardrails and architectural tube in stainless and mild steel.
We review your pipe size, wall thickness, material and the end shape you need.
We confirm the model and match the forming tooling.
Your machine is built and assembled in our 30,000 m² factory.
We form your sample parts and inspect them before shipment, FAT on request.
Heavy-duty seaworthy packing, full documents and door-to-door logistics.
Overseas installation, operator training and long-term spare parts.
01Each machine is wrapped, braced and lifted into a custom case so nothing shifts in transit.
02Heavy machines get an iron-frame base and sealed case, rated for long ocean freight.
03We load 20ft, 40ft and open-top containers in our own yard and send photos before departure.
04Machines leave Zhangjiagang by sea to buyers in 65+ countries, with complete export paperwork.
We design and build the machine in Zhangjiagang and handle the tooling and after-sales ourselves.
Years manufacturing pipe processing machinery
Modern production plant with in-house R&D
Countries with Telhoo machines
Usual reply time for a quotation
Send your tube or pipe specs and an engineer will reply with a machine or process and a quotation, usually within one working day.
Share tube size, wall thickness, material, bend radius and quantity.
We check feasibility and tooling and choose the machine or process.
You receive a detailed quotation, usually within one working day.
Expanding, reducing, flaring, beading and other end shapes, depending on tooling. Multi-station models run several operations in sequence for complex ends such as exhaust joints.
The models differ mainly in maximum pipe diameter and forming force. Send your pipe size, material and the end shape you need and we will reply with a model and tooling.
Yes. End forming is often the final step after cutting and bending. Telhoo builds non-standard and automated cells that link these operations for higher output.
How far back from the tube end the formed section can sit. The SG40-2 and SG60-2 offer a 120 mm stroke. The SG80-2 and SG120-2 step up to 200 mm. On exhaust and air-conditioning assemblies the feature is often well inside the tube rather than at the lip, and that is a stroke question rather than a diameter question.
Forming the end from the parent tube removes a weld, a bought-in fitting and an inspection point. There is no joint to leak and no filler metal, which matters on fluid and gas lines. The trade-off is die cost, so forming wins once the part repeats.
It depends on the SG model, the number of stations and the dies for your end shape. Dies are quoted against your drawing. Send your tube size and the end shape you need and we reply with a model and a price.
Yes. Send a sample tube and the end shape you need and we form sample parts and inspect them before shipment. A factory acceptance test is available on request.
Send your pipe size, material and required end shape, and our engineers will reply with a model and tooling.
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