Walter Tosto S.p.A.

Walter Tosto S.p.A. is an Italian manufacturer specializing in the design and fabrication of large pressure vessels, reactors, heat exchangers, and other heavy equipment for the chemical, petrochemical, and energy sectors. The company produces custom-engineered components for high-pressure and high-temperature applications, including fluidized-bed reactors used in maleic anhydride production processes.

Headquartered in Chieti, Italy, Walter Tosto operates fabrication workshops equipped for heavy modular construction and has supplied equipment to industrial projects throughout Europe. It focuses on precision fabrication, heat recovery systems, and innovative installation techniques for constrained plant sites, often supporting revamp and retrofit initiatives at existing chemical facilities.

The company serves clients in the materials and energy industries by providing durable process equipment that meets international standards. As a specialized fabricator, it contributes to projects involving proprietary catalysts and feedstock conversion, maintaining a role as a key supplier for complex industrial vessels without broader ownership ties to major chemical groups.