How to operate the auto cutting corrugated duct machine

Do you know how to install mould for spiral pipe machine? Do you know how to operate corrugated duct machine? Do you know what is corrugated duct machine for prestressing?
Welcome to watch our video to study how to operate Duct machine from our, it can produce galvanized steel spiral pipe from dia 36-dia 300, auto cutting and manual cutting, fast working, best price.
If you are interesting, welcome to contact me: [e-mail]; website: www.ptgrouting.com
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