At MASA we cover the entire life cycle of facilities and infrastructure, from consulting and design through to installation, commissioning, maintenance and management.

We have offices all over Spain and, through our network of subsidiaries, also a strong presence in Portugal, Morocco, Algeria, Malta, Brazil and Peru, to assure the most highly specialised and competent service possible.

Our action capacity is based on our network of subsidiaries and branch offices, to assure a swift response to our customers’ needs, with a central organisation to make resources available wherever they are needed for ongoing contracts, scheduled shutdowns, projects and emergencies.

MASA has offices in Spain, Portugal, Morocco and France, to assure immediate availability to act and provide solutions in any situation.

How we work

A tailor-made specialist service, because every customer is unique. We can count on resources of all kinds for every task to be undertaken. We can count on resources of all kinds for every task to be undertaken.


We have our own tool-control logistics centres in Riudoms (Tarragona) and San Roque (Cadiz).

From these centres we control all the company’s machinery and tools (more than 25,000 items), performing the necessary monitoring to ensure that they are properly conserved and maintained, and scheduling the external checks needed so that they comply with all the applicable standards and legal requirements.


We also have two calibration laboratories, equipped to the highest level and staffed by highly qualified professionals, to meet both our own and our customers’ needs, facilitating compliance with the relevant regulatory and legal requirements and constantly striving to achieve excellence:

  • A natural-gas lab with three calibration benches to calibrate ranges between 0.16m3/h and 4000 m3/h.
  • An instrumentation lab for electrical signals, pressure, temperature, volume, dimension and strength.


We have a department that specialises in the extraction, cleaning and insertion of heat exchangers, with extensive experience of planning and performing shutdowns in this specialist area.

We have four logistics centre in Huelva, Bilbao, Sines and Castellón, from where we address needs for this business area in Spain, Portugal, Algeria, Morocco and France.
The logistics centres are equipped with extraction trucks, tilt extractors, 1000 kg/cm2 high-pressure units, exterior and interior tubular-beam cleaning robots, on-site cleaning equipment, etc.

We have equipment for up to 3000 kg/cm2 and specialist personnel to carry out waterjet-cutting tasks.


At MASA we have strengthened our core business with six workshops of our own to provide strategic support for maintenance and assembly jobs.

These workshops are equipped with the necessary resources to manufacture all kinds of boilers and pipes and pressure containers up to 12 mm thick.

We manufacture:

  • Furnaces, boilers, steam coils
  • We prefabricate and assemble heavy metal structures (racks and buildings) and light supports in accordance with all the applicable industrial standards.
  • Manufacture and re-tubing of exchangers
  • Tank repairs and manufacture
  • Manufacture of torch shafts
  • Equipment machining and spares recovery
  • Capacity to review and tare safety valves, pressure valves and vacuum valves, including for reloading, and unit shutdowns incorporating portable equipment.

We have more than 40 years’ experience of developing industrial projects and solutions for the O&G, electricity generation and industrial sectors, where we are experts, although our vocation for service and experience has driven us to explore other sectors where we have now become benchmarks, including: engineering, distribution, pharmaceuticals, automotive, paper, buildings, steel, energy, petrochemicals and refineries We are therefore proud to work as a strategic partner for some of the leading names in the following sectors: En base a esto nos sentimos orgullosos de trabajar, como socio estratégico, para algunas de las empresas mas importantes en los siguientes sectores:

Sales at the MASA Group are GROWING every year, thanks to our streamlined action capacity based on our extensive network of subsidiaries and branch offices.
As the MASA Group strives for the specialisation, commitment, loyalty and safety of our employees, we encourage their sense of responsibility and initiative, because people are the basic tool for generating the maximum profitability and fostering the excellence necessary to provide our customers with the best services and products.
At the MASA Group training is a priority investment that builds confidence and leadership within our work teams. That is why we make every effort to provide the necessary hours of training needed for EXCELLENCE, which in recent years has been increasing exponentially.
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