The QR-DM I duct machine was used widely on site or factory, due to the feature of small volume, compact structure, high efficiency and simple operating. The Corrugated duct was in accordance with the standard of JG225-2007, which was with the good sealing performance.

And this machine has the variable speed motor, it realized the high output and durability characteristics, which was the dedicated equipment of manufacturing the Pre-stressed Concrete metal Corrugated Duct. Then this duct was mainly used in post-tensioned prestressed concrete water engineering structures, large buildings and bridges and other projects.