Shipbuilding Fan blower: Weight:25~352kg, Volume:500~21000m3/h, Speed:870~3500r/min, Pressure:490~1800Pa, Shipbuilding ... blower for shipyard use Draft fan:Weight:25~352kg,Volume:500~21000m3/h,Speed:870~3500r/min,Pressure:490~1800Pa,Voltage ... .5°.COMPANY INTRODUCTION Our company,Qingdao Chunhao Air Blower Ventilation Equipment Co., Ltd. is located in the Scientific Technology Park of Shinan District ...