Fire door hinge

product information

● Brand: Xifengda

● Name: Fire door hinge

● Material: Iron

● Remarks: Support processing custom

The hinge manufacturer teaches you the role of metal hinges:

The hinge is a component that connects the door and the door frame to each other, and mainly serves to support the door body, and at the same time has a certain anti-theft function. At present, the hinges used in the security door are generally built-in and external. The built-in hinge is suitable for the external door. The external hinge is suitable for the inner door. For the inner door, the external hinge is used. The hinge shaft diameter is generally larger than 12 mm. The steel plate is rolled and its closed side must be welded.

The fire door hinge is mainly provided with a plurality of elliptical holes on the hinge piece, and a rack-shaped serration is formed below the middle position of the hinge piece, and another hinge piece is arranged below the hinge piece, and the hinge piece forms a plurality of snails corresponding to the elliptical hole. The hole has a rack-like serration formed on the middle portion thereof, and is meshed with the serration between the two hinge pieces, and is inserted into the elliptical hole and the screw hole by screws, so that the two hinge pieces are combined to prevent the hinge piece from being fireproof. The vibration causes the sliding when opening and closing, and the fire door is easy to open and close. At the same time, the utility model can also adjust the relative position of the two hinge pieces to adjust the spacing between the fire door and the door frame.