Научно-производственное объединение "Научно-исследовательский и конструкторский институт монтажной технологии"
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FIELD: chemical engineering. SUBSTANCE: protective gas is delivered to a nozzle of a burner rotating around the pipe axis through circular gas distributing device and hollow guides in which the burner is mounted for axial motion. EFFECT: increased efficiency of operation. 5 dwg
SU4771838/08A1989-12-191989-12-19Device for welding pipes with pipe boards
SU1771156A1
(en)