U Shape auto duct line 5 also called auto duct line 6, it is mainly for TDF/angle steel/C-shaped flange forming with daily processing capability of 1000-2500 square meters. Only with inputting dimensions in duct, it can automatically complete uncoiling , leveling, beading, punching,shearing, locking, forming TDF/angle steel/C- shaped flange and folding.

Auto duct line 2 consists of a metal frame, leveling and beading machine, hydraulic punching machine - punching sharped and square mouth, hydraulic shearing machine. Electrics controlled by automatic computer controller with a closed-loop feedback system which obviously improve the precision and stability of production. The maximum operating speed is 16m/min. Length error of ±0.5mm and diagonal error of ±0.8mm.