Metal Pipe Corrugated Duct Making Machine

Post Tension Duct Forming Machine 

corrugated round Steel Metal Pipe Galvanized Metal Duct Making Machine

corrugated pipe machine a kind of equipment for producing pre-stressed concrete 

reserved tunnel metal bellows makes the galvanized steel strip coil into four wave 

shape then undercuts and swages to apply the bellows, Which With high efficiency 

and Small volume, Easy operation and maintenance, convenient and speed adjustable. 

It is suitable for centralized use at construction sites and factories.