DN horizontal pneumatic spot welder is the special equipment designed for welding venturi and is mainly used for buttjoint of such work pieces as venturi.
型卧式气动点焊机是为焊接文氏管而设计的专用设备，主要用于文氏管或类似工件的焊接。
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The buttwelder is widely used in buttjoint of such materials as steel, iron, copper and aluminum rod. It is also used in the butt joint of flat bar, flat aluminum, steel tube and steel tube.