ST Welding

ST Welding manufabricates custom-built pressure vessels, columns, heat exchangers, vacuum furnaces, drying and cooling drums, and storage tanks. It also installs technological equipment, steel structures and process piping at customer sites, including required heat treatment. Pressure vessels are produced to 325 bar, from carbon steel, stainless steel, clad materials, titanium, duplex and Incoloy, with production drawings prepared in Inventor.

The company works on order, building equipment from customer drawings or datasheets and supplying inspection plans, quality plans, welding documentation and a handover protocol. Its customers are industrial companies in the chemical, petrochemical, energy, pharmaceutical, food and paper industries. References listed on the website include Air Liquide, BorsodChem, Schmetz and Ondrejovické strojírny.

The business traces its roots to an assembly plant founded in 1963, and IN VEST, s.r.o. was established as a private company in 1998. The company adopted the ST Welding name in 2023 and operates from the Duslo industrial area in Šaľa, with a production area of 7,000 m². It holds ISO 9001, ISO 14001, EN ISO 3834-2, AD 2000 Merkblatt HP0 and PED certification.

Product: Custom-built pressure vessels up to 325 bar, columns, heat exchangers, vacuum furnaces, drying drums, storage tanks and on-site equipment assembly.