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azienda-1 3S Saldature Speciali Segrate s.r.l. was founded in 1970.
From the start, the Company has specialized in the design and production of components and equipment which are broadly used in the industrial heat exchange sector for the production and supply of heat exchange coils tried and tested in accordance with the various international standards.

Over the thirty or more years the 3S s.r.l. è company has been in business, we have always adapted to the latest trends in the fields of design and construction and made appropriate entrepreneurial decisions to follow the evolution of the European and international markets, using innovative technologies for the production of all our components.

Our company has two production units. The first one is based at Cambiago (Milan). Here, there is a warehouse for stocking the raw material and a production department that carries out the finning of the tubes, the construction and assembly of the finned tube heat exchangers, and the construction of shell and tube heat exchangers.

The second production unit is based at Trezzano Rosa (Milan). It is here that the finned heat exchangers are designed and constructed. Here, too, are our management and administration offices and a state-of-the-art technical design office that uses advanced technology and 2D and 3D CAD design-prototyping software.


Via Bari, 8 20060 Trezzano Rosa (MI) - Italy ··· Tel. +39.02.90981369 - Fax +39.02.90981374 - info@3stc.it ··· P.I. - C.F. 02979530157