... ,harbor,etc 3.Certificate:CE,ISO,BV,SGS Conveyor roller dia 60-219,length 190-3400,used ... ,CEMA,DIN,JIS4.Certificate:CE,ISO,BV,SGSOur conveyor rollers have been exported to more than 30 ... for testing are available.The more relaxed payment termsDetailed conveyor roller idler feature: 1.Roller idlers Dia 50mm-219mm ... and idlers according to the buyers' requirements conveyor belt for coal mining industry