Because the spiral duct machine can only produce straight pipes, elbow machine and other equipment have been developed. Among them, the double elbow machine works simultaneously through two separate worktables, which can achieve a high degree of production flexibility: one is the curling operation One is a bite table. Therefore, the machine can be used freely at any time, and there is no need for time-consuming conversion. The two workbenches work simultaneously. The product is not only beautiful in appearance, but also firm, strong and light in undercut.
1) Good product compatibility and high degree of standardization;
2) Strong airtightness;
3) The ventilation loss is small; the ventilation noise is small, and the round tube is better than the square tube.
4) Factory inspection is convenient;
5) Anti-balanced external pressure (negative pressure) procedure;
6) Ministry of Materials;
7) Easy installation, few connection points, small installation space and low installation cost.
8) The overall layout of the installation is beautiful and the grade is high.
9) It is convenient for daily maintenance and cleaning.
10) The cross-section wet circumference is small, the resistance along the way is small, and the energy loss is smaller.
11) Full mechanical processing, no secondary processing is needed for one-time forming.
12) Adopt high-speed flying cutter with high precision of pipe diameter.
13) It adopts four methods: shrink sleeve connection, casing connection, flange connection, and belt connection, which makes installation more convenient.
14) The quality of insulation outside the pipe is better than that of rectangular ducts.
