Reliable Small Profile Corrugated Roofing Machine Automatic Micro Wave Sheet Metal Roll Forming Plant Product Overview Dongguang Hengfu Roll Forming Machine Co., Ltd. manufactures this 690 small arc corrugated roof sheet roll forming machine, designed for customers requiring stable production of small wave roofing panels. The equipment completes the entire process from coil feeding, continuous forming to fixed-length cutting in one automated line. Suitable for processing