duct fabrication machine auto line metal round square ...
duct fabrication machine auto line steel square round tube ... China CNC Duct Fabrication Machine Line Factory,CNC . The air duct production line V is composed of feeding frame, leveling and beading, hydraulic punching point and square mouth, hydraulic shearer, movable pittsburgh forming machine,feeding platform, duplex flange machine, duplex angle iron flange machine (or double snap …
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