... established in 2003, with about 10 years' experince in belt conveyors, conveyor idler rollers, conveyor rollers, roller frame design ... .Absolutly rust-resistant.Mterials: Carbon steel, Q235. Rubber belt. Belt materials(4 kinds): Canvus(56N/mm.layer), nylon(100 ... , nylon, steel wire, plastic belt. 2. Driving part (electronic motor, high speed coupling, speed reducer, low speed coupling, and all of the ...