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 …
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