roller idle for the conveyor: 1.Dia: 60-219mm 2.used in mining ,coaling ,plant power, 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,etc.2.Tube:steel tube Q235,seamless steel tube3.Shaft : 20mm/25mm/30mm4.Bearing: single/double row ...