Ventilation Ducts for Mines are adopted international advanced production equipments by our company. It's galvanized of the inner and outside of the ducts. It includes jointing spiral ducts and without-jointing spiral ducts. It has the following advantages: smooth inner wall, little resistance, light in weight, corrosion-proof, long service life, low cost, etc, it is the ideal equipment of ventilation duct in mines.The jointing ventilation duct is adopted cast steel flange connection, the automatic welding technics for the connection of ducts body and flange. Comparing with riveting technics, which avoids the second scathe to the duct body, and also with better capability of gas-proof.Due to the techniques of riveting with the misdistribution of joints, and the improper installation is easily leading to rips of duct. Aiming to the point, our company meets track with international technics and adopts integrated welding technics to avoid the existence problems of riveting.
