Heavy equipment manufacturer for petrochemical and nuclear industry


ATB Riva Calzoni is a international leader in design, manufacturing, supplying, installation and commissioning of heavy equipment for petrochemical and nuclear industry all over the world.

The Heavy Equipment division specialises in design, manufacturing, supplying, installation and commissioning of heavy equipment for the petrochemical and nuclear industries.

ATB Riva Calzoni Spa is an international reference point in the supply of pressure vessels (reactors and separators) for Oil&Gas and refineries. Well know worldwide as leading manufacturer of heavy weight and high thickness reactors from hydro processing applications with CR, Mo Steel alloys including vanadium modified alloys.

Since 1960 ATB has designed and manufactured over 2,600 pressure vessels for the petrochemical industry: components that must guarantee maximum performance and be efficient and safe, capable of operating at very high pressures and in critical conditions. The need of refineries and petrochemical plants to increase production volumes has contributed to the constant technological improvement of manufacturing procedures. ATB Riva Calzoni uses Cr steel alloys, Mo which include the latest generation modified vanadium alloys.The company has qualified and distinguished itself in the welding of stainless steel and anti-corrosion materials of urea and duplex grade.


Sectors and Products