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Duct seam closing machine
Duct seam closer hfj-12 is used with duct auto line, tdf transverse flange duct machine or tdc transverse flange duct machine and pittsburgh lock machine. the ideal duct connection includes united joint and right-angle side. the duct seam closer hfj-12 works out with the seam of high quality without help of other auxiliary connecting tool.
