The selection techniques of hardware fittings for steel fire door products are described as follows:

 

1. Closer: Fire doors other than pipeline wells should be equipped with shutters. Single door equipment has one shutter, double door equipment has two shutters. Steel fire doors quote price for large and small fans, that is, the fire doors of mother and son doors are equipped with shutters only on large fans.

 

2. Locks: Pipeline well door equipment, pipe door lock; Fire-proof locks for machine room door equipment, double-fan mother door should also be equipped with fire-proof locks, for the door of the passage can be equipped with fire-proof locks, aisle door locks or handles, only one of the three can be used, which requires consumers to choose by themselves, the locks and accessories used together should be specified in the contract.

 

3. Fire-proof hinges: The number of hinges per door is determined by the height of the door. Three hinges are used for doors with a height greater than 1800 mm and two hinges are used for doors with a height less than 1800 mm.