Spiral wind tube of installation significantly to reduced has tube and tube Zhijian of connection points, makes fittings combined Department of leak reduced to minimum degree, typical of spiral wind tube length is 3~6m, and typical of rectangle wind tube of length only 1~1.5M; and connection two a spiral wind tube just a tube received pieces, and traditional of rectangle wind tube of connection is often need a completely independent of double method blue system.
B standardized products.
Spiral round duct fittings (fittings and connectors) production is highly automated and systematic, and industrial quality control.
C low installation costs.
Circular duct systems installation time only rectangular duct, similar to 1/3.