conveyor roller 1.Dia 60-219,length 190-3400 2.Used ... steel,harbor,etc 3.Certificate:CE,ISO,BV,SGS Conveyor roller dia 60-219,length 190-3400,used in mining, ... testing are available.The more relaxed payment termsDetailed conveyor roller idler feature: 1.Roller idlers Dia 50mm-219mm, length 190-3400mm, ... rollers and idlers according to the buyers' requirements conveyor belt for coal mining industry