When DJS Board Ventilator fan selection, you can press the formula R = Pf / Qf2 DK45 fans, find work drag R, draw on the work of the drag R curve P ~ Q characteristic curves, then the above conditions point method a similar method to determine the required specifications and installation angle fan. Ventilators and other fan base is preferably mounted on a horizontal surface mine safety certificate fan, when fans generally do not install base construction, as long as the plane put on a solid stable, can the long run. Fan dust fan _ mine safety certificate (certified) _ Anshan provided by Zibo Blower Factory Co., Ltd. fan. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is an industry leader in Shandong Zibo, 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. Zibo Blower leadership with the staff warmly welcome all inquiries negotiations to create a better future Zibo Blower.