Cost saving method of spiral duct fan

The correct installation and use of spiral duct can save energy and reduce installation cost. In order to save labor and materials, it is better for the Construction Party of spiral air duct to calculate the spiral air duct of each specification, and pay attention to subtracting the length of other pipe fittings, such as tee, air valve and elbow, when calculating the length of air duct. There are many different methods for the installation of spiral air duct. When ordering, we must first decide which method to connect and then decide the actual purchase. The specific connection methods are flange connection method and socket connection method. When installing with flange connection method, the pipe of spiral air duct and accessories should be the same size. With socket test, the specification of accessories is smaller than that of spiral air duct, so we can calculate each specification of air duct, and the exact length of each spiral duct can not be cut in the installation construction. The basic requirement is that there should be enough temporary spiral duct joints. The air duct fittings, components and all welding joints of the pure system must be very tight. The internal surface of the pure spiral air duct should be smooth, and there is no splicing joint and reinforcement device in the pipe.

The distance between the flange, flange bolt and rivet hole of the production line of spiral air duct enterprise shall not be greater than the specified mm in the standard. The screw hole welded by the spiral air duct company has obvious compatibility. There is no obvious Nick depth on the surface of stainless steel plate, aluminum plate and composite steel pipe, stainless steel plate and aluminum plate air duct surface, and there are no defects such as damage on the surface of comprehensive composite steel pipe. The spiral air duct must be tight, with uniform width and no defects such as half bite of hole and expansion crack. Straight longitudinal seam staggered angle spiral duct appearance, relatively flat state.