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Grupo Alfonso Gallardo> Alfonso Gallardo S.A. > Production Process

Production Process

The raw materials used are hot rolled stainless steel coils, cold-rolled stainless steel coils and galvanised coils. The steels used are non-alloyed with a low carbon content, thus improving weldability.

Alfonso Gallardo S.A.

At the start of the production process, the steel coils are transformed into different sized strips cutting them longitudinally, depending on the size to be manufactured.

These strips are prepared for the production of a cold-worked tube and especially welded cross-sections and open cross-sections.

Alfonso Gallardo S.A.

The strips pass through the rotating double decoiler and then on to the horizontal strip accumulator and roller guide, which works to maintain the material reserve in order to ensure the facility’s continuous operation.

Alfonso Gallardo S.A.

From the accumulator the strips enter the cold-working line and the sides are centred with a centring device in order to obtain a proper upset forge weld..

Alfonso Gallardo S.A.

This way the strips are converted into a round, cold-worked tube or into specialised welded cross-sections. The tube remains round until it is packaged, in which it is made square or rectangular by using vertical calibration groups from which the automatic cutter comes in via a roller block.

Alfonso Gallardo S.A.

The tube completed in its different forms and sizes is then sent out where it is passed to the packaging line.

Alfonso Gallardo S.A.

The tubes, in there different shapes, have various market uses depending on their size and thickness.

Open Cross-sections

Open cross sections go through the same process, except for the welding.

Alfonso Gallardo S.A.

Metal sheets

The sheet flattening and crosswise cutting line process is much simpler. The different thickness and widths, depending on the desired products, go on to the flattener that, via rollers, places a high pressure on the sheet. When the sheet exits the flattener, it is ready to be cut with sears to the desired length.

Alfonso Gallardo S.A.

The sheets produced by Alfonso Gallardo S.A. are used, among other uses, relative to their cross-section, for industrial roofing and doors, garage and estate doors, industrial blinds, etc.


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