• Acceptance of welder tests for the procedures TIG, MIG/MAG, E-hand, gas fusion welding according to the regulations DIN EN ISO 9606, DIN EN ISO 14555, DIN EN ISO 17660 and DIN EN ISO 14732
• Acceptance of welding procedure tests according to DIN EN ISO 15614 and AGFW FW446
• Acceptance of test seams according to DVGW Code of Practice GW 350