1. Insert type connection

The bayonet-type air duct is connected with the rectangular air duct, and different forms of bayonet are inserted into both ends of the air duct.

pp pipe connection joint

2. PP duct connection

Both ends of each pipe section are rolled into drum rods connected by bands, and one end is shrunk into a small opening. When installing, insert the small port into the large port according to the airflow direction. On the outside, fasten the drum rods at the two tube ends and connect with bolts, and the bolts are fixed and fastened to the earrings.

3. Hose connection

The hose connection is mainly used to connect the spiral air pipe and various components (such as the air outlet on the side of the static pressure box of the diffuser, etc.).

4. Insert and connect PP duct

Plug connection is mainly used for rectangular or circular duct connection. First make the connecting pipe, and then insert the connecting pipe into the air ducts on both sides. Then, tighten it with self-tapping screws or rivets. The pp duct is economical, and the thickness of the pp duct processing board can be reduced by 10%-15% under the same diameter. It reduces costs, and the efficiency during hoisting is about twice that of a rectangular pp duct. Under the same plate thickness and pipe diameter, the strength of the pp duct is higher. On the same cross-section, the spiral duct structure has more reasonable tension and better rigidity, so it can greatly reduce noise and vibration.

Socket connection, that is, a PP sleeve is welded at the end of each section of the air pipe to facilitate the insertion of the next section of the air pipe;

Flange connection, that is, a PP flange is welded at both ends of each section of the air pipe, and the screw-to-lock connection is used during installation.

Convenient production, welding method for installation, firm, square PP duct flange connection, round and square can be customized

Need to splice flange, easy installation, screw lock, easy to disassemble and maintain

How to strengthen the square PP duct

In industrial exhaust, in most cases, the end centrifugal fan is used to extract the air. The pipeline forms a negative pressure. The industry design specification stipulates the wall thickness and strengthening method of the square PP duct at a certain wind speed. Usually, the square PP While the large square air duct is reinforced with outer flanges, the inner part is supported by PP circular pipes.

Precautions for ordering square PP duct

Drying conditions: The material performance is low in density, strength rigidity, hardness and heat resistance are better than low-pressure polyethylene, and can be used at about 100 degrees. It has good electrical properties and high-frequency insulation, which is not affected by humidity, but it becomes brittle at low temperatures, and is not wear-resistant and easy to age.

PP material, lined with steel wire, can be bent and stretched arbitrarily, various colors are available, light weight, long service life

Applicable temperature: -20 degrees??+90 degrees

Size: can be customized

1. Insert type connection

The bayonet-type air duct is connected with the rectangular air duct, and different forms of bayonet are inserted into both ends of the air duct.

pp pipe connection joint

2. PP duct connection

Both ends of each pipe section are rolled into drum rods connected by bands, and one end is shrunk into a small opening. When installing, insert the small port into the large port according to the airflow direction. On the outside, fasten the drum rods at the two tube ends and connect with bolts, and the bolts are fixed and fastened to the earrings.

3. Hose connection

The hose connection is mainly used to connect the spiral air pipe and various components (such as the air outlet on the side of the static pressure box of the diffuser, etc.).

4. Insert and connect PP duct

Plug connection is mainly used for rectangular or circular duct connection. First make the connecting pipe, and then insert the connecting pipe into the air ducts on both sides. Then, tighten it with self-tapping screws or rivets. The pp duct is economical, and the thickness of the pp duct processing board can be reduced by 10%-15% under the same diameter. It reduces costs, and the efficiency during hoisting is about twice that of a rectangular pp duct. Under the same plate thickness and pipe diameter, the strength of the pp duct is higher. On the same cross-section, the spiral duct structure has more reasonable tension and better rigidity, so it can greatly reduce noise and vibration.