3S Saldature Speciali Segrate S.r.l. has been ISO 9001:2015 certified since 2007 and operates in full quality regime, guaranteeing maximum care and attention throughout the production process. In 2021 the company obtained the certificate of conformity of the Total Quality System (module H), in accordance with the PED2014/68/EU directive.

For over twenty years, 3S has been developing and having its own thermodynamic selection software which has benefited from continuous improvements and upgrades over the years.

Thanks to the innumerable thermodynamic tests carried out over the years - including those carried out in laboratories certified by Eurovent and Ahri - 3S can respond to the most demanding requests from the HVAC market.

All production is carried out in compliance with the European Directive PED2014/68/EU. Structural calculations can be performed according to ASME, EN standards or other codes on request.

The design of the heat exchange coils can be performed in compliance with the anti-seismic and anti-shock standards for the naval sector.