No.1 Continuous Annealing Line (#1 CAL) No.2 Continuous Annealing Line (#2 CAL) No.3 Continuous Annealing Line (#3 CAL) Cold-rolled coils are fed into two pay off reels on the entry side and cleaned off rolling oil and others at cleaning section after they are jointed to each other by welder.Then the coils are heated to the annealing temperature and soaked in furnaces,and quenched in a RQ zone after passing through a gas jet cooling zone.After receiving overaging treatment in an overaging furnace,the coils are temper-rolled so that their surface roughness is finished and shapes conditioned. On the delivery side,the coils are coated with rust preventive oil after their surfaces and dimensions are inspected, and they are divided into specified weight according to the customer requirement.