NCM-400 steel door frame roll forming machine can be used for forming various types of steel and stainless steel door frames, and can process metal sheets with a thickness range of 0.6~1.8mm and a width range of 100mm~400mm into various specifications and shapes of door frames according to length and cross-section requirements. This roll forming line comes with a production speed of 0-10m/min. The door frame roll forming machine can be operated by a single person and, combined with a free combination cutting method, one machine can complete the production of a whole set of door frames.