MM Metálica is a Portuguese company divided into areas of international expression.

The Company

MM Metálica is specialized in the manufacture of ducts – circular, rectangular and oval – and  the necessary components for the proper functioning of ventilation installations.

Our goal is to solidify our sealing solution as the most effective on the market. We bet on quality, productive innovation, human capital with social responsibility and environmental sustainability.

Our Products

The experience gained and proven by numerous reference works, supported by the sophisticated means of production that we have, ensures the delivery of top quality solutions.

Quality - Certification

The commitment to R & D (Research and Development) combined with the experience of our technical team and manufacturing team places MM as a reference in works of high technical complexity and quality requirement. The products are in accordance with EN 1505:1999, EN 1507:2006, EN 1506:2007, EN 12237:2008 and SMACNA..

Manufacturing Process

Within our range of products we have a special manufacturing process that allows the manufacture of ducts with the highest degree of tightness according to EN 12237:2008 Class of watertightness D.

Custom made products

The galvanized sheet we use complies with EN10346 standard – continuous hot-dip coated steel flat products – DX51D type with minimum coating of 275g / m2; We can, however, supply our products with higher specifications and other metals such as galvanized sheet with 275 g / m2, stainless steel AISI304,316L or aluminum.


In addition to our complete range of piping and pipelines, we manufacture complete acoustic attenuation solutions.

Exhaust systems and industrial filtration

Industrial Fans

“Heavy Duty” flow records for high demanding applications

Custom parts production: We have an industrial unit, based in Guimarães, equipped with laser cutting systems, robotized welding, numerical control bending and calendering, and also electrostatic painting greenhouse.

Turn-Key Solutions

Installations of gas exhausting networks and pneumatic conveying, turn-key. We combine knowledge with high technical rigor and use the most sophisticated design and simulation tools.


We have a suitable logistics platform that allows us to offer our customers a scheduled delivery service with short handling times.

The levels of performance and quality guarantee the effectiveness of international response.

Check our product catalog

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