Mechanical Processing

Cut to length
GAMMA 3 offers many types of secondary tube processing. The most common pipe and tube processing is definitely cutting to length. After an initial cut from commercial bars, the tubes go through various tube forming and shaping processes. At the end of these processes, a cut to length is necessary, because the material, during the tube processing, stretches and changes its length.
With the cut to length we can obtain the finished tubes in the desired length. Our cuts to length are also possible on very small sizes, such as small tips for the legs of chairs a few tens of millimeters long.
Furthermore, our tube processing cuts to length can also be inclined or angled, both on one side and on both sides, with two perfectly parallel cuts, very popular, for example, for legs of chairs and tables inclined outwards.

Drilling and shearing
In addition to all the main mechanical and deformation processes, GAMMA 3 can also satisfy requests for more traditional mechanical processes, such as for example the drilling and shearing of tubes and pipes.
These mechanical workings can be done both on the side of the tube and in the internal hole of the tube.
A drilling to enlarge the internal hole of the tube can be used, for example, to insert a rubber in a chair leg, or to then go on to make a thread, another of our mechanical processes and tube processing. The threading can be used to insert a threaded foot, or a threaded rod for lighting.
A hole in the side of the tube can be done either with a drill or by cutting.
Shearing is one of those mechanical processes done with a dedicated mould, by shearing or punching, controlled by a press, usually mechanical. Both mechanical and hydraulic presses are available in our fleet.

Pipe and tube threading is a tube processing required for many uses. Making a tube thread is closely connected to the connection of elements, and to assembly.
There are three main types of tube threads possible.
The first is threading tubes into the inside hole of the tube, to be able to screw an adjustable foot into a table or chair leg, or to screw a threaded rod for a lamp holder into a lighting component.
The second type of tube threading is on the side of the pipe, for example to be able to screw a switch or a cable gland into the stem of a lamp.
The third type of tube threading can always be proposed on the side of the pipe and for the same reasons, but with a previous flow drilling. With this special type of drilling, we are able to obtain a greater thickness to be able to thread, and therefore solve a recurring problem in low thickness tubes.

Pipe and tube lathing is a mechanical process for chip removal, useful in many sectors.
A first example of tube lathing is that of working the edge, necessary after the deformation processes that leave the edge of the tubes irregular or crooked.
A second example of tube lathing is internal lathing, which is useful for polishing, or for enlarging the internal hole of the tubes to a very precise size.
Finally, it is also possible to do tube lathing on the outside of the tubes, to reduce the outside diameter, or to bring it to a precise dimension. Two different diameters can also be created externally, for example for the insertion of a rubber component, or for machining on an aesthetic and also functional level, such as knurling.
This last tube processing make the surface much rougher, so as to create a good grip area to hold the hose in your hand without letting it slip.

Painting and degreasing
Pipe and tube painting and degreasing are a fundamental step in the finishing of the product.
Before doing a tube painting it is necessary to start from a first phase of degreasing. The tubes, after the various mechanical and shaping processes, are greasy and with residues of lubricants, necessary to carry out all our processes.
The degreasing of the tubes completely cleans from any type of lubricant and oil, and can be done both hot and with ultrasound.
The consequent tube painting, on the other hand, will be done by spray, and will be an epoxy tube painting. This quality tube painting is then dried in an oven, in order to guarantee beauty and durability over time.
Of course, primer coats are also available for external components, which require an anti-rust primer before the final tube painting.
As a last step we have the packaging of the painted tubes, with materials suitable for the protection of the paint itself.

Welding and brazing
The pipes and tubes welding we offer is divided into two very distinct categories: wire tube welding and braze welding.
Flush tube welding is mainly used to weld tubes and components that require a strong seal, in fact, pulsed MIG welding is also available, which welds deeper.
We can thus weld tubes and plates with a strong hold, for example to assemble table legs with threaded plates, where an adjustable foot will then be screwed in, or for lighting components, to screw the lamp holders into the threaded hole.
Welding tubes for braze welding is very different, because it is done hot with an oxy-acetylene flame torch. The welding material, in this case, will be done with a rod, of the right material for welding, which is always a metal alloy.
Brass tube welding is also available, again by braze welding.

Laser cutting and engraving
Pipes and tubes laser engraving is a modern and special process, because it allows us to obtain shapes and decorations that were not possible until a few years ago.
For tube laser engraving we mean a process done by a mobile laser head, with the tube being controlled and which can rotate with a spindle.
This entire tube laser engraving process is controlled by CNC numerical control, with advanced systems and industry 4.0 technologies.
Our special machines have been built according to our processing needs.
With this special tube laser engraving system, it is possible to obtain more types of processing.
One is certainly that of cutting and processing the head of the tubes, with inclined and shaped cuts.
Furthermore, it is possible to work on the side of the tubes, doing a laser engraving of tubes with grooves, holes, cuts, slots, and any other desirable shape, with a very high precision guaranteed by the CNC.

Pipe and tube grinding is essential for an excellent finish on tubes, and requires perseverance and attention.
Tube grinding means sanding the tubes externally with special machines, using abrasives.
There are several possible abrasive grits, from the most aggressive to the finest, which are used from roughing to final polishing.
Our tube grinding is also available on conical and curved tubes, with machines specifically designed for this use.
In addition, flat bars and profiles, or oval, square and rectangular section tubes can also be sanded automatically.
Tube sanding can serve as a finish before painting. In this case the grit of the abrasive will be larger, and the finish will be rougher.
Otherwise, tube grinding can also be used as a polishing cleaner, or before galvanic treatments, such as chromium plating.
After a polish, it is also possible to apply a clear varnish to protect the external surface of the pipes.