Welding in STABO Quality

Our many years of experience form the basis for manufacturing high-quality, long-lasting products. Numerous certifications and a comprehensive quality management system testify to our strong performance in welding technology.

Welding procedure tests in accordance with EN 15614 and ASME IX are available for the following materials:

• Heat-resistant, fine-grained steels of grades P355GH, P460NH, 15NiCuMoNb5
• Heat-resistant CrMo steels of grades 13CrMo4 5, 10CrMo 9 10
• Heat-resistant special grade P91
• Cryogenic, fine-grained steels up to P460NL2
• High-strength tempering steels up to P690 QL
• Austenitic grades 1.4301, 1.4404, 1.4571, 1.4539
• Duplex steels 1.4462

Welding processes applied:

• Submerged arc tandem welding
• Submerged arc narrow-gap welding up to 240 mm wall thickness
• Submerged arc nozzle welding
• WIG orbital welding
• Manual welding processes 141, 111, 136

Heat treatments:

• Stress-relief heat treatment for components up to 150 tons
• Normalisation annealing for components up to 30 tons