... with competitive price. Details of belt conveyor machinery trough idlersMaterials (2 kinds): seamless steel pipe, reinforced plasticThe bearing seat ... metal stamping, reinforced plastic. C3.Tube: customized welded steel tube, Carbob steel, Q235. Diameters: 89, 108, 133, 159mmLength: ... 200 to 3400mm Used in the steel industry, harbor, coal industry, power industry, mine, cement ...