The double layer roll machine can be used to produce two different profiles of steel sheet, such as two wall or roof sheets, one floor decking sheet, and so on. This machine is equipped with variable frequency speed control and auto power. The double layer roll forming machine brands will gain more and more reputation these days. This machine is able to produce corrugated steel plate with two different kinds of specifications. This machine is also able to economize much occupation space for factories and increase the working efficiency at the same time.