In the construction industry, fire doors are widely used in various settings to ensure the safety of lives and property. As a critical safety feature, steel fire doors offer high fire resistance and protective capabilities. This article outlines the installation steps and precautions for Nantong fire doors to assist you in properly installing and using them.

　　The first step is selecting the appropriate steel fire door. When choosing a steel fire door, consider factors such as door dimensions, fire resistance rating, and materials based on actual requirements. Ensure the door size matches the door opening dimensions and select a fire resistance rating and materials that meet the necessary standards.

The second step involves preparatory work. Before installing the fire door, certain preparations must be made to the door opening. First, verify that the door opening dimensions and flatness meet the requirements for the fire door. Second, clear debris and dust around the opening to ensure installation quality.

Step three involves installing the door leaf. Position the door leaf within the opening and use a level and plumb bob to adjust its horizontal and vertical alignment. Secure the door leaf with appropriate screws and expansion bolts during installation to ensure stability.

　　Step four involves installing the door frame. Embed the frame into the opening, ensuring a tight fit with the door panel. Pay close attention to the frame's level and plumb during installation, securing it with screws. Verify that the gap between the frame and door panel meets specifications, then seal it using fire-resistant sealant material.

　　Step Five involves installing the door lock and handle. Select suitable hardware and follow the manufacturer's instructions for installation. Ensure the lock and handle are securely fastened and function properly.

The next step is conducting a safety inspection. After installation, perform a thorough check to verify all fire door functions are operational. Inspect whether the door panel opens and closes smoothly, the lock is secure, and the fire seal remains intact.