Door Co., Ltd. Beijing HRH Tenda professional installation of fire doors 1) steel fire doors to achieve "fire doors common technical standards" GB12955-2008, while meeting current fire safety norms, acceptance criteria and design requirements of the drawings. First, steel fire doors 2) steel fire door frames, doors were used thickness 1.2mm, cold, upper and lower ends of 0.8mm using 1.2-1.5mm thick steel welded frame folded into a U-shaped connecting hinge and behind closed doors at the plus liner, steel thickness not less than 3.0 mm. 3) double doors between the lid seam panels, to better meet the fire safety requirements for fire doors. 4) the leaf surface firmly welded joints in the side doors, front evenly distributed without joints. No false welding and burn phenomenon, part of the outer surface of the plug weld polished smooth. Fire doors surface spray, paint uniform, smooth, and so no pitting, painted bubble leak and flow phenomena. Frames, doors surface without obvious bump, scratches and other defects, process for phosphating, electrostatic spraying, thermostatic oven curing, surface bonding firm, wind, corrosion resistance, color a dozen color choices for customers. Second, the standard hole size: single open --061806200820 0,821,082,409,200,921 0,924,102,010,211,024 double open --122,012,211,224 1,520,152,115,241,820 1,821,182,420,202,021 Note: Can be customized fire doors three different sizes according to customer demand, product material: steel fire door frames, doors were used thickness 1.2mm, 0.8mm cold plate, the upper and lower ends of the use of 1.2-1.5mm thick steel plate welded folded into a U-shaped frame, hinges and door closers at the connection plus liner, steel thickness not less than 3.0 mm. Fourth, hardware accessories mounted on the fire door locks, hinges and other hardware accessories, are detected by the national fire department qualified complementary products, its melting temperature is not lower than 950 ℃, reached the fire code requirements; five, the main technical performance : 1, Fire resistance: Class for 1.5h, B for 0.9h, Class C for 0.6h. 2, sound effects: a better sound insulation, sound insulation index Class C product RW≥23dB. 3, decorative: surface electrostatic powder spray, beautiful and strong and durable. 4, steel fire doors facing the transfer in accordance with customer demand Optional: Meranti wood, ash, beech, maple, teak, cherry, red walnut, black walnut, Sapele and so on. 5, color steel fire door:? If you need additional light gray color, the color can be customized according to the customer. 6, fire doors with windows, fire-resistant glass is available in two sizes: 200 * 600,400 * 400, 8, the company's fire doors, according to the actual size of the system to do the other side. Free on-site measurements within six Beijing area, to determine the direction of the door opening: normally closed fire doors is generally outside the door, open the evacuation direction, standing outside face hinges, hinges