Fireproof entrance door 1

he door frame is formed by bending cold-rolled galvanized steel sheet to ensure that the shape and position tolerances of the door frame meet the design requirements of the drawings. The accessory reinforcement plate adopts anti-rust treatment. The inner cavity of the door frame is filled with cement mortar to insulate and ensure its strength. The side wall width of the door frame is 100mm. The door leaf is made of 0.8mm galvanized steel plate, the thickness of the door leaf is 68mm, and the fireproof door core board is filled in. The door body is glued with fireproof foam glue under high pressure to ensure that the finished door after processing is not deformed, degummed, corrosion-resistant, and crack-free. . At the same time, fire-proof seals are installed at the lap joints of the frame fans to ensure the sealing performance of the product. In addition, the high-density non-combustible refractory materials ensure that the product has good sound absorption, heat preservation, and sound insulation performance on the basis of good fire and heat insulation performance. Equipped with anti-theft B-class lock core, fire-proof door mirror, and fire-proof concealed hinge. The used hardware and internal filling materials have passed CCC certification.