Tunnel furnace is horizontally positioned. it is like a tunnel. this tunnel furnace is for bright annealing cold rolled stainless steel coil. it is coil to coil continuous operational. the annealing process takes place in protective gas to achieve bright and clean(BA) finishing of the coil surface. The tunnel furnace has another general name as bright annealing line. The bright annealing line is an essential unit for cold rolling mills of stainless steel flat coil. Strong Metal have over 30 years' experience in design and manufacturing tunnel furnaces for stainless steel industries. This video showcases a large tunnel furance built for a large cold rolling mill in China.