Ключевые слова:
Pipework systems|Welders|Arc welding|Pipes|Safety measures|Pipe fittings|Pipelines|Approval testing|Non-destructive testing|Occupational safety|Inspection|In situ|Pressure pipes|Welding|Acceptance (approval)|Repair|Thickness|Steels|Austenitic steels|Ferritic steels|Gas-shielded welding|Stainless steels