To ensure the quality of steel fire doors, the selection of hardware accessories is also an important link. Since fire doors are special for fire prevention, their accessories naturally can not melt in case of fire, so the selection of hardware accessories for fire doors must be standardized:

Fireproof hinge: the number of hinges of each door leaf in the quotation of fireproof door is determined by the height of the door leaf. Three hinges are used for doors with a door leaf height greater than 1800 and two hinges are used for doors with a door leaf height less than 1800- [fireproof window]

Locks: pipe well doors and equipment pipe locks; Fire locks shall be used for doors and equipment in the machine room, and double fan female doors shall also be equipped with fire locks. The door used for the passage can be equipped with fireproof lock, aisle door lock or handle, and only one of the three can be used, which needs to be selected by the consumers themselves. The lock accessories used together shall be indicated in the contract.

Door closer: all fire doors except the pipe shaft door shall be equipped with door closer. One door closer for single door equipment and two door closers for double door equipment. The quotation for steel fire door is that the fire door of large and small leaf (child and mother door) is only equipped with door closer on the large leaf.

Sequencer: double doors with 2 door closers shall be equipped with 1 sequencer.

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