... 3.Reasonable structure 4.Application:Td75,DTII,DTIIA,etc conveyor roller frame 1.Corrosion resistant 2.Revolves smooth3.Reasonable structure ... belt, steel-cord belt 4.Apply scope:Metallurgy, Coal, Transportation, electric power, building materials, chemical industry, Light industry, grain industry, ... each idler frames ranges from 900 mm to 1500 mm Roller· Distance are generally fixed at 1 meter to 1. ...