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