A centrifugal fan is a mechanical device that increases gas pressure and conveys gas by relying on the input mechanical energy. It is a driven fluid machine. It is widely used for ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. Ventilation and air inlets of boilers and industrial furnaces; Cooling and ventilation in air conditioning equipment and household appliances; Drying and selection of grains Inflation and propulsion of wind tunnel sources and hovercraft.
A centrifugal fan is composed of a casing, a main shaft, an impeller, a bearing transmission mechanism and a motor.
The 4-72 centrifugal fan can convey air and other non-flammable and non-corrosive gases that are non-corrosive to steel. No viscous substances are allowed in the gas, and the dust and hard particles contained in the gas shall not exceed 150mg/m ³. The gas temperature must not exceed 80 °C.
The 4-72 centrifugal fan features excellent aerodynamic performance, balanced operation, low vibration, high efficiency and long service life. It is widely used for indoor ventilation in industrial and mining enterprises, large buildings, hotels, restaurants, etc.
The B4-72 explosion-proof centrifugal fan is mainly composed of an aluminum impeller, casing, air inlet and an explosion-proof motor. It can be used for ventilation of flammable and volatile gases.
The F4-72 corrosion-resistant centrifugal fan is a type of anti-corrosion centrifugal fan. It is mainly composed of components such as a stainless steel (or FRP) impeller, casing, air inlet, and a motor. It can be used to convey corrosive gases.







Our factory can design and manufacture 4-72 series Fans with vibration reduction platform for users.
★ Our factory can design and manufacture 4-72 double suction Fanss for users.
★ Our factory can design and manufacture high-temperature 4-72 series Fanss for users (maximum temperature ≤ 500 ºC).
★ Our factory can design and manufacture corrosion-resistant 4-72 series Fanss for users.


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Dezhou Linghao Refrigeration Equipment Co., Ltd. is a strong enterprise specializing in the production of industrial fans, specializing in the production of tunnel fans, high temperature fans, centrifugal fans, mine fans, axial flow fans, anti-corrosion fans and other products. Our products are widely used in tunnel construction, mechanical equipment, laboratories, power plants, steel mills, etc., mainly used in ventilation, exhaust, intake, air circulation. With advanced CAD/CAPP software fan design technology and rich professional manufacturing experience, the products sell well in China, Southeast Asia, Africa and other countries and regions of more than 20 countries and regions, won the praise of customers.


Q: Are you factory or trade company?
A: We are manufacture, support ODM/OEM service.
Q: Are there any order requirements?
A: We will appreciate it a lot if you can offer us your product performance requirements and operation environment, so that we can customize optimal production to meet your every requirement. (1) Air volume (2) Cooling/heating capacity (3) Cooling/heating area (4) Power and voltage
Q: What are your Before-sale services?
A: (1) Tell customers how to use our products and matters needing attention.
(2) Guide customers to choose the best and economic product, recover the investment within short time.
(3) Site inspection if you need.
Q: What are your In-Sale services?
A: (1) Quality control must be inspected strictly.
(2) In accordance with the agreements stipulated in the contract.
Q: What are your After-sale services?
A: (1) If the project needs our installation guidance, we can send our engineer and translator. We can also send customers installation video to teach them how to fix and operate with our product.
(2) Usually, our product warranty is 18 months after leaving factory or 12 months after installation for non-human factor damages, within this months, all parts broken will be responsible for our factory.
(3) Regular contact with customer, consult with the customer feedback, come true with the customer's two-way communication.
Q: How long is the delivery time?
A: Generally it is 1-7 working days if the goods are in stock. or it is 15-25 working days if the goods are not in stock, it is according to quantity.