Pipe mold spiral air duct machine

Spiral duct machine is used to produce spiral air duct, which is a thin-walled pipe with spiral seam made of metal strip coil. It is round, non-welded, once-formed, mostly used for air supply and bulk material transportation, instead of traditional white iron air duct (i.e. manual seam-biting air duct). It is a kind of widely used air duct. The spiral duct machine can automatically produce straight duct without manual knocking.

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