... No power roller line Aluminum frame, steel legs, feet 60mm cold drawn seamlessE 2mm diameter /distance 1.5 m; drum wall thickness ... Power roller diameter φ60mm wall 2mm, roller pitch 100mm, galvanized/cold drawn seamless steel tube production roller surface; Driver built-in, motor ... , the remaining steel structure; panel fanned, with δ = 2.5mm cold plate bending, both ends of the seal, the center width ...