1. Clamp type connection
Mainly used for connecting steel plate circular air ducts and spiral air ducts. During installation, insert the small opening into the large opening according to the direction of airflow, and use steel clamps to tightly connect the two ends of the drum clamps. Use bolts to fix and tighten them in the middle of the earrings.
2. Plug in connection
Mainly used for connecting rectangular or circular ducts. First, make the connecting pipe, then insert the air ducts on both sides, and tightly fix them with rivets.
3. Insert style connection
Mainly used for connecting rectangular ducts. Insert different forms of inserts into both ends of the air duct and compact them.
4. Flexible hose connection
Mainly used for connecting air ducts and components. During installation, the two ends of the hose should be placed outside the connected pipe, and then the hose should be tightened with a special soft clamp.
If it is the connection of the smoke exhaust duct, the smoke exhaust duct should still be welded (especially the horizontal pipe, and the slope of the pipe should be ensured to facilitate oil leakage) to avoid oil and gas leakage and ensure project quality. However, due to the high temperature gas inside the smoke exhaust duct, direct butt welding may also cause expansion and cracking during use. In actual construction, full welding of the flange can be done, and it should not be a right angled flange to ensure that it is not affected by the thermal expansion and contraction of the duct, and also to strengthen the duct.