Ningbo steel fire door price

Steel fire door with a steel material for door frames, doors and frame doors panels, if the filling material is filled with non-toxic to humans fireproof insulation materials, and with a fireproof metal parts consisting of a certain refractory inner doors Properties of the door. Installation of fire doors Material: There are steel fire doors and wooden fire door fire doors these two have some differences in details on the installation method. From the fire rating is slightly different at the time of installation we must pay attention to detail. First, when installing wood fire doors, door frames should be smaller than the hole size 20mm, frame scraps buried in the ground under 20mm. Doorframe should be fixed firmly to the wall, the vertical angle. Li Tang, Tang should stay the same strict attention straight angle to avoid planing saw. On both sides of the door frame fixed point of not less than three, pitch better not greater than 800mm. Secondly, steel fire doors in the installation process, taking into account this problem bending the door frame to support it in the width direction of the door frame with wood Fang, door scraps buried in the ground under 20mm, embedded parts and then weld on the frame and the wall. Then open the hole in the upper corner of the door frame on the wall, pouring cement, sand, perlite (1: 2: 5), concrete, etc. can be used after the concrete has set. Fire doors have closed requirement: the national standard for fire doors gap size of each lap of a clear requirement: for steel fire doors and door frames require their fans lap not less than 10mm, the gap between both sides of the fan and the door frame no larger than 4mm. After installing fire doors closed the gap can not be too large, otherwise closed fire door is difficult to guarantee performance, it is difficult to reflect its suppression of fire and smoke spread in effect under fire conditions. Therefore, installation of fire doors left seam width must be strictly controlled. According to these standards installation, to ensure the effective role of fire doors to some extent, consumers must be at the side of supervision at the time of hiring construction unit, to prevent them from cutting corners and other problems, so as to not let the fire doors in case of fire causing casualties.