... 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,IKA ... wide variety of types and are widely used in the electric power, metallurgy, mine, coal, cement, steel, chemical, port, hydroelectric power, ...