The Roll forming process is widely used to make the mass-product which has accuracy measurement of cross section. More often than not, production speed is the 30~55m/min though, can make the production speed to 15~185m/min. just need few people to load the material and unloading during process. Therefore, you can reduce much more worker and cost than other way of processes. It can be used to manufacture the small quantity of multi-variety product, due to the fact that it is easy to control the length of the product and at the same time, is not took a long time to set-up and change the mold, if it has simple shape. The cold roll forming process makes the intended section of shape by the coil gets through the rollers in a raw. And this roll forming process is used in automobile and construction area which manufacture the same shape of mass-product. Especially, other process has been changed to cold roll forming process due to reduce the cost of production recently.