1) tube and flange corner should transition arc inorganic fiberglass duct, transition radius should be 0.8 to 1.2 times the thickness in order to improve the state of the cantilever flange bearing capacity and avoid stress concentration. Requirements fiberglass mesh duct flanges should be extended to the duct body. 2) the length of the glass fiber mesh cloth, be sure to take the width of the overlap enough ways to cut lap to improve the carrying capacity to effectively overcome the radial tensile stress, bending and bending shear stress collusion. Glass fiber cloth seams in lap length is generally 50 ~ 100mm; And each glass fiber cloth seams and joints should be a certain distance from the adjacent layers. Longitudinally between adjacent layers, the distance should be greater than the cross-lap joint 300mm glass steel ventilation ducts, the same layer lap seam distance of not less than 500mm. Dezhou, Shandong Hongxin Air Conditioning Equipment Co. magnesium composite duct is a new high-tech composite sheet thickness fiberglass duct, the product of high quality magnesium oxide, magnesium chloride, alkali fiberglass cloth and inorganic binders roll through modern technology Pressure is made with light weight, high strength, does not burn, noise, heat, moisture, water resistant, long life and other characteristics, is a new generation of energy-saving, environment-friendly green products. Texas conditioning plant Hongxin main business: central air conditioning, HVAC equipment, electrical installation, glass steel products, various types of fire; ventilation; cooling products, fire exhaust fan, Francis fan, roof fan, cabinet centrifugal fans, axial fans, mixed flow fan, induced fan, centrifugal fans, dampers, exhaust valves, muffler outlet and so on. Guiyang FRP duct, best quality, lowest price! , FRP duct thickness provided by Horizon Air conditioning equipment. Texas Horizon Air Conditioning Equipment Co. (www.hxktsb.com) in new air handling units. Fresh air ventilator. Dampers. Pressure delivery outlet. Blower Wind chassis. Outlet industry has high visibility, integrity management, quality of service both welcome to inquire or consult our "Business League call" it!