What is the standard provision you are based on?
Which company makes this kind of fire doors?
Acceptance criteria for fire doors: 1. Check basic items. Qualified fire door: tightly closed, flexible switch, invisible change, no inverted sound insulation door with good sealing and sensitive automatic closing. Excellent fire door: tightly closed, flexible switch, no block, rebound, invisible change and inverted sound insulation door, good sealing, sensitive automatic closing of fire door. 2. Check the fire door accessories. Qualified fire door: complete accessories, firm installation, correct position, flexible opening and closing. Excellent fire door: complete accessories, firm installation, correct position, flexible opening and closing, applicable and beautiful. # # # Acceptance standard for fire doors. First, the installation of fire doors should be in accordance with the types of fire doors used, and adopt appropriate installation methods. Second, the door frame of the fire door can be fixed with the wall by expansion bolts, or iron pieces can be embedded at the hole when building the wall, and welded with the door frame connector when installing. Three, no matter what kind of connection is used between the door frame and the wall, each side should not be less than three anchor points, and should be firmly connected. Four, when installing the fire door, should first find straight, hanging, temporary fixed after the appropriate size, and make correction and adjustment.