... 219mm,length 190-3400mm 2.Used in mining,cement,steel,harbor,etc3.Certificate: ISO9001,CE,SGS,BV,IKA ... used in the electric power, metallurgy, mine, coal, cement, steel, chemical, port, hydroelectric power, and grain industry. Summary ... return roller manufacturer We also producet nylon roller, impact roller and so on cement conveyor nylon roller manufacturer cement conveyor impact roller manufacturer ...