Isotubi, S.L., has been working in the stainless steel world for more than 40 years.

Isotubi, S.L., part of Grupo Lapuente, is a company able to offer a competitive product which meetsthe most important quality requirements in the international markets.


We would like to contribute with our products and related services to facilitate the business of our clients by providing them a wide range of solutions for any of their business needs on a way we could help them to generate a maximum added value for their offers.


We develop and produce innovative, sustainable and quality solutions for our clients to manage their water, aqueous and gas installations on a safe, easy and differentiative way.


We would like to be a reference for quality, innovation and sustainability in our business segment, an engine of motivation and personal development for our employees, and that our actions and our products may contribute to a imperishable World.

  • Offering a quality service
  • Honesty
  • Long-term compromise
  • Optimism


Our main challenges are to know about the concrete needs of our customers, to adapt our products and processes to the new technologies and to make a constant effort in improving our customer service.

Both our production and quality control processes are certified by Tüv according to the ISO 9001 norm. We also hold the main European Approvals for our products and processes: AD Merkblatt (Germany), 2014/68/EU Pressure Equipments Directive, CERTIF (Portugal), DVGW (Germany), Numepress TÜV product certificate (Spain and Portugal), LLOYDS, WATERMARK, SITAC, CSIRO, NSF, FM, WRAS, STO, ABS and DNV Approval for ships.


We are presenting in this catalogue our range of NUMEPRESS products, the stainless steel tube and Pressfitting system which allows making facilities in a very easy way, without using welding or threads, saving a considerable amount of time and money.

Our factory and warehouse, located in Barcelona, has an important stock at our customer’s disposal, so delivery terms are extremely short. As we are manufacturers, we can also offer specialized products to our customers when needed.

These are the main applications of our system: compressed air, heating facilities, sanitation facilities, fire-extinguishing system (sprinkler), solar energy, plumbing, industrial facilities, shipping facilities and mining.