saw shaper
锯齿开棉机 Saw-teeth opener
开齿机将翅片切开，可生产出锯齿形翅片管。剪切速度，根据辊子输送管子后焊接的速度自动控制。
There are fin cutting devices to produce serrated fin tube and cutting speed is controlled automatically depend on welding speed of tube dancer.
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