860/850 corrugated color steel roll Forming Machine 1.PLC ... no shake 3.hydraulic system,long ope 860/850 corrugated color steel roll Forming Machine IntroducationThis machine is made ... stable,no noise,no shake Controlling by computer, PLC display, operation is easy, running is steady and reliable,endurable ... : Cr12 mould steel with quenched treatment. 860/850 corrugated color steel roll Forming Machine