Quality control:We run exhaustive quality checks on the materials and accessories that are delivered to our factory, using precise, calibrated instrumentation.
Reliability:Our machinery is suitable for handling gauges from 0.8 to 30 mm. All our tanks are subject to hydraulic testing, to guarantee leak-tightness, and we dispose of the necessary means to ensure that this testing is correctly carried out.
Final finishing:The final finishing work on our products is done in response to the requirements of our customers: Shot-peening, priming, painting final coat, galvanising... along with the most suitable packaging for transport purposes.
Technology:We employ state of the art welding technologies: Submerged Arc Welding (SAW), pulse arc and double pulse arc welding, MIG/MAG, or others, always controlling the parameters used


  • Pressure Equipment Directive 97/23/EC.
  • Simple Pressure Vessels Directive 87/404/EC.
  • Standards EN 12285-1, EN 12285-2 and UNE 62350-3
  • Design codes BT Standard , ASME, Ad-merkblatter, CODAP or others.
  • Homologation of welding and welder procedures
    Caldereria Terns, SL|C. Ramon Llull, 52|08554 Seva (Barcelona)|T.(0034) 938124498|F.(0034) 938125084|Legal