Plug-in flange is an advanced flange connection during manufacturing rectangular air duct . After connecting, the air duct has good sealing and it's firm and durable. The installation process is simple and convenient
With high efficiency, it is easy to make standardized, batch, mechanized production. Compared with the traditional angle iron flange , it is more time-saving, material-saving and efficient.
The plug -in flange with good sealing, durability and strong connection is especially suitable for rectangular ducts with large cross-section area.
