Welding of Materials

Welding work is controlled and performed in accordance with standard ČSN EN ISO 3834-2. We weld steel materials up to the yield point of S690MPa; we are also able to weld high-alloy austenitic steel or non-ferrous metals including aluminum.

We can weld steel structures up to the weight of 60 tons, with the possibility of positioning weldments up to the weight of 50 tons.

In the field of welding, we are certified in accordance with ČSN, EN and DIN; however, our experience includes welding according to the ASME IV, AWS D 1.1. or NORSOK M101 standards.

Basic certification of the company: DIN 18800-7 class E, DIN EN 15085-2 certification level CL 1with the extension of DB requirements, ČSN EN 15085-2 certification level CL 1 with the extension of ČD requirements, ČSN 732601:Z2 production group Aa, ČSN 732601:Z2 production group Aa with the extension of SŽDC requirements, DIN EN 1090-1,2, class design EXC4

Qualification of welders: EN 287-1, EN 1418 

Manually

• non-fusing tungsten electrode in a protective atmosphere (TIG)

• coated electrode or wire in a protective atmosphere, up to the length of 48,000 mm (E, MIG, MAG)

Automatically

• under flux, up to the maximum length of 25,000 mm

• longitudinal welds under flux up to the maximum width of 2 m, height of 3.5 m and length of 40 m

Welding Robot

• sub-assemblies up to the weight of 1, 000 kg, MIG/MAG method

Automated Welding in a Protective Atmosphere

• maximum lenght of 13,000 mm

• maximum height of 1, 900 mm and maximum width of 966 mm

The quality of the welds is inspected by:

• non-destructive tests (X-ray, ultrasound, magnetic glazing method, penetration, visual), performed by competent personnel of group 2 with qualification according to the applicable EN  

• destructive tests (mechanic and metallographic tests)