Steel DOOR frame bending center Welcome to GG DOOR factory processing center. Today we are going to share with you: How are steel door frames bent? For the door frame of the steel door, we use high-quality materials, 1.5mm galvanized steel plates. Through this equipment behind me, according to our drawings, the door frame of the steel door is folded into the size and shape we need. Finally, we polish these door frames to take shape. If you are interested in our products, you can leave me a message in the comment section. www.gg-door.com