Durable Metal Hat Track Roll Forming Line High Rib Precision Roofing Purline Making Machine for Heavy Metal Sheds This 75 hat channel roll forming machine is designed and manufactured by Dongguang Hengfu Roll Forming Machinery Co., Ltd. as a practical automatic solution for producing light steel building profiles. The equipment integrates coil feeding, roll forming, straightening and hydraulic cutting into one continuous production line, making it suitable for metal component