[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - a ventilation pipe project], metal duct reinforcement shall meet the following requirements; a) round duct (not including spiral duct) 800mm diameter greater than or equal refrigeration room works, and the pipe length is greater than 1250mm or the total surface area greater than 4m2 reinforcement measures should be taken; 2) rectangular duct length was longer than 630mm, duct insulation edge longer than 800mm engineering, pipe length greater than 1250mm or low-sided duct Flat area greater than 1.2m2, medium, high pressure air hose is greater than 1.0m2, shall take reinforcement measures; 3) irregular oval duct reinforcement, pipe execution should refer to the rectangular duct. 2, rectangular duct elbow production, generally should be used as a flat radius of curvature of the inner and outer concentric curved side bends. When using other forms of bending, flat edge longer than 500mm, you must set the elbow deflector. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - decontamination] for parallel flow clean room, "said laminar flow clean room is customary) plant cooling project, due to mainly rely on air flow," Pistons beat squeezing action to exclude Line dye, so the speed of the cross section is a very important indicator in the past have made reference to the United States 20gB standard ventilation pipe work, using 0.45m / s. But people also understand that such a large amount of ventilation required speed is great, in order to energy conservation, are also in the quest to reduce the feasibility of wind. In China, the "clean air technical measures" and (clean plant design specifications) vertical parallel flow are such provisions (laminar) cleanroom ≥0.25m / s level parallel flow (laminar) cleanroom ≥0.35 m / s plant cooling engineering, Tianjin Jinzhong Ji decontamination company (certified), Tianjin project provided by the Tianjin Jinzhong Ji purification HVAC Equipment Co., Ltd., Tianjin Jinzhong Ji HVAC purification equipment (www .Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff enthusiasm welcome all inquiries negotiations to create a better future for the base.