• Industrial piping construction
• Industrial furnace construction
• Industrial furnace assembly
• Industrial furnace service
• Construction of metal frameworks
• Assembly and dismantling of machines
• Welding and various mechanical processing of metal elements (grinding, polishing, bending, sanding, etc.).

SIS has highly qualified welders team, holding Welding Institute autorisation and TÜV certificates.

Welding methods according to PN-EN ISO 4063:

• 135: Metal electrode welding in active gas shield; MAG method
• 136: Flux-cored wire metal-arc welding with active gas shield
• 141: Wolfram inert gas welding: TIG method
• 111: Electrode welding

We have welding machines of world leaders in welding technology.