Centrifugal fan 4-72-5A low noise fan off-the-shelf power: 2.2KW Voltage: 380V Speed: 1420r/min Flow: 3864~7728m3/h Total pressure: 790～502Pa
Nut Ground Screw with 3 pieces or 6 pieces customed nut to adjust the height of ground screw for solar panel ,with reinforced plate to install the ground screw ,it is easy to install ,and no harm to environments ,save time and cost .
with one or two or three big blades ,or continuous small blade .
4-72 type A/C centrifugal fan
The centrifugal fan of this system has the characteristics of high efficiency, low noise, stable pressure curve and wide application range. It is mainly used for indoor ventilation of factories, mines, stadiums, opera houses, basements, large and small hotels, restaurants, shopping malls and several large buildings. For cooling and dust removal applications, it can also be used as a gas recycling system with other types of mechanical equipment. The conveying medium is air and other gases that are not self-igniting, harmless to the human body and non-corrosive; B4-72 uses an explosion-proof motor, which can be used as a ventilation for flammable volatile gases. The gas temperature is ≤80 °C, and the gas is not Allow viscous substances, dust and solid impurities ≤150mg/m3. 
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Submission:
Solar Energy System Nut Ground Screw
Pv Mounting Ground Screw,Nut Ground Screw Pile,Ground Screw Nut,Solar Energy Mounting Ground Pile
BAODING JIMAOTONG IMPORT AND EXPORT CO., LTD , http://www.chinagroundscrew.com