Ключевые слова:
Welded flanges|Arc welding|Size|Aligned|Class II welding|Visual inspection (testing)|Electric welding|Steels|Butt joints|Pipelines|Heat treatment|Flanges|Bend couplings|Welding|Pipes|Design|Unalloyed steels|Pipe junctions|Pipe couplings|Dimensions|Heating|Gas-shielded welding|Angles (geometry)|Welded joints|Defects