2. Maximum Duct Length：3100mm
3. Arm range ： Minmum Diameter 330mm
The oval duct is formed by round spiral duct that is stretched and deformed upward. The design of the oval duct forming machine plays a big role.
The newly upgraded oval duct forming machine has increased the capacity of the cylinder on the basis of the original, so that the diameter of the processing is larger, the expansion makes the joint more precise and does not rebound.
Preda oval duct forming machine is easy to operate, and it can be easily operated after being filled with oil.
It is a more practical equipment in the air duct production industry.