... manufacturer 1.Dia 89-219mm,length 190-3400mm 2.Used in mining,cement,horbar Specification: cement conveyor return roller manufacturer 1. ... Dia 89-219mm,length 190-3400mm 2.Used in mining,cement,steel,harbor,etc3.Certificate: ISO9001,CE,SGS,BV, ... conveyors and belt conveyor idlers. Established in 1976, our company is primarily engaged in producing and marketing carrying idlers, impact ...