The JULI® oval ventilation duct is used for low headroom or small mine tunnels with a height limit. It is made in an oval shape to reduce the headroom requirement by 25% to permit the large equipment to be used.
The JULI® layflat tunnel ventilation duct is frequently used in the underground with blowing air (positive pressure) from the tunnel outside, which provides enough fresh air for the tunneling project to assure the worker’s safety.
The JULI® spiral ventilation duct is frequently used in positive and negative pressure in the underground, and it can blow air from outside and exhaust air from inside.
The JULI® antistatic ventilation duct is widely used underground with high concentrations of gas. The antistatic properties of the fabric can prevent static electricity from accumulating on the surface of the fabric to form sparks and cause fires. The ventilation duct will bring fresh air from outside and exhaust turbidity air and diluent toxic gases from the underground.
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