How does the spiral air duct machine bite in and operate? The diameter of circular duct (excluding spiral air duct) is greater than or equal to, and the pipe part is greater than or the total surface area is greater than 4m2.

If the edge of rectangular air duct is larger than the length of insulated air duct, or the area of one side of low pressure duct is larger than 1.2m2, and that of high pressure duct is larger than 1.0m2, strengthening measures shall be taken;

As shown in Figure 3, the reinforcement of unconventional elliptical dumping should be carried out with reference to rectangular pipes.

Bolts, nuts, washers and rivets used for spiral duct fans shall match the pipe characteristics.

For the reinforcement of non-metallic pipes, in addition to complying with the provisions of Article 1: 1 The diameter or side of hard polyethylene pipes is larger, the joints of air ducts and flanges should be strengthened. Not greater than; 2 The reinforcement of organic and inorganic FRP pipes shall be the same as the material or anti-corrosion performance of the object materials, and the overall pipe.

The production of rectangular pipe bends shall generally be in internal and external curved bends with radius of curvature to the plane side. When used in other forms of bending, elbow fluid parts must be provided when the plane is larger than the plane.

The air duct of the purification air conditioning system shall also meet the following requirements:

1. When the length of rectangular pipe is less than or equal to, the bottom plate shall not have splicing joints; When it is greater than, there should be a horizontal splicing joint;

Auxiliary equipment of spiral duct fan

As the spiral air duct machine can only produce straight pipes, it has developed a slender machine. Among them, the double elbow machine can be operated by two separate workbenches at the same time to achieve a high degree of production and flexibility: one is a crimping console, and the other is a occluding workstation. Therefore, the machine can be used freely and the conversion does not require time. The two jobs work at the same time. The product is not only beautiful, but also firm, firm and light!