Quanzhou Quanzhou spiral duct ventilation duct fittings accessories Quanzhou Yi-ming, fabrication and installation of HVAC Equipment Co., Ltd. Tel: 18559053899 is a company specializing in ventilation ducts spiral duct, a total of flange duct, research and development and other ventilation dampers end products, production, installation and sales of businesses, product variety, can provide customers with: fans, fume purification, aluminum outlet, stainless steel outlet, casual flow, waterproof Grille, double lattice fence outlet, air volume control valve, fire exhaust valves, exhaust port, high strength spiral duct, spiral duct insulation, duct total plate flange, galvanized elbow, black iron elbow, silencer plenum, muffler, silencer pipes, no power hood industrial exhaust fan, and a variety of duct fittings, etc., I produced the spiral duct and accessories with a small resistance, strength, corrosion Haonai inner surface smooth, beautiful appearance, easy installation, applicability, and other characteristics. Features: 1, duct seam tight and has the role of ribs, high strength, low resistance, good sealing performance, beautiful appearance, easy installation, long service life. 2, raw materials used are spiral ductwork Benxi production of galvanized steel. 3, the outer wall smooth, small duct obstruction, does not produce secondary supply and exhaust noise, reduce energy consumption, saving operating costs. 4, field production, cutting, drilling, open hole, simple installation, while saving time and labor, shorten the construction period. 5, does not require maintenance after completion of the installation, reduce maintenance costs. 6, can be processed into a double insulation type duct, construction sites without the need to adapt to the ceiling. Use: spiral ductwork widely used in hotels, shopping malls, textile, chemical, petrochemical, machinery, instruments, electronics, pharmaceuticals, tobacco, food, medical, warehousing, offices and underground, air defense, air basement and other projects, exhaust, exhaust pipes.