[Jie Weinuo Industrial Star recommendation - a total of flange plate duct] Jie Weinuo Industrial production mechanism duct, a total of flange plate duct, ventilation ducts. Jie Weinuo Industrial Construction tin ventilation ducts installed ventilation ducts, Jie Weinuo Industrial Star recommendation - a total of flange] accident ventilation duct ventilation frequency (ventilation volume ratio of the volume of space and room ventilation ducts tin prices, unit: times / h), according to plant height and the maximum allowable concentration of harmful gases to determine the size. Maximum allowable concentration of harmful gases> 5mg / m3, the workshops were highly ≤6m tin ventilation pipe design, ventilation frequency ≥8 times / h; plant height> 6m who ACH ≥5 times / h. When the maximum allowable concentration ≤5mg / m3, the ventilation should be multiplied by 1.5 times. Ventilation ducts tin price | ventilation ducts preferred Jie Weinuo Industrial | Tianjin tin ventilation pipes provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) quality services and products, and are subject to approval and confidence in the new and old customers and the industry. Our company is a certified member of the whole network Commercial Union, Commercial Union customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!