Productive process


High performance and specialisation in the production process

For 50 years, OVS has been successfully meeting the demands of the international market, which is highly demanding in terms of solutions and construction choices. Through its constant commitment, the company boasts a highly specialised, efficient organisation and production process, made up of synergies capable of producing excellent equipment, relevant and complex projects that win the trust of customers all over the world.


  • Mechanical
  • Thermal and structural
  • Construction drawings
  • Fatigue analysis
  • Wind and seismic
  • 3D design
  • Design by analysis (FEA/FEM)
  • Design by Formula
  • Mechanical solutions for critical services
  • Improved mechanical design
  • Optimisation of thermal design data

Design and Construction

  • PED
  • ATEX
  • ASME VIII 1&2
  • EN 13445
  • PD5500
  • AD2000 Merkblatt
  • Ispesl, VSR Collection
  • GB 150
  • AS 1210
  • GOST
  • IBR
  • API
  • TEMA B+C+R
  • HEI
  • ISO
  • NACE
  • DIN

Automatic and Semi-Automatic Welding

  • Internal IWT Technologist (qualified by IIW)
  • Internal welders qualified to UNI 14732, 9606 & ASME IX
  • Polysoude machines fleet for tube to tubesheet welding
  • ESW plant for anti-corrosive welding applications
  • PLC-controlled GTAW hot wire plant

CND Quality Control

  • Internal Supervisor Level III
  • Internal department for NDT execution with qualified operators Level II
  • TOFD / P.A. control instrument
  • Internal bunker equipped with RX machine


  • Tube bundles
  • Equipment components
  • Spare parts

OVS offers its customers extra services of great added value

Engineering consultancy

Engineering consultancy for process modernization and performance improvement.

Fast track

At the customer’s request, OVS can guarantee fast track deliveries for heat exchangers and pressure vessels.

Thanks to flexible internal management, fast delivery orders benefit from an unconventional approach on delivery times.

Outsized equipment

Possibility to design and manufacture oversize equipment with international transport facilitations guaranteed by a production site located close to the Italian seaport of Marghera (VE).