roller idle for the conveyor: 1.Dia: 60-219mm 2.used in mining , ... agriculture 3.pipe material : steel Detailed conveyor roller idler future: 1.Roller idlers: dia 60-219mm.length 190-3400mm, ... which are used in the steel industry,habor,coal industry, power industry,cement industry ... painting ,hot galvanized painting ,static spraying painting roller idel for the conveyor