... automatical 2) Custom design according customer's requirements Guardrail roll forming machine linecomprised of decoiler, levelling, punching system, ... coil feeding machine, guider, roll forming machine, cutting system, collecting platform and the PLC ... width:480mm, forming thickness(2.0-3.2mm),Q235 galvanized steel strip2. Material thickness: 2-3.2mm3. Main ...