When the asphalt plant dryer is out adjusted in the right way, the ring and rollers are deformed. The inner flights, on the other hand, wear out over time as they are exposed to surface contact with the aggregate. In addition, fuel change is required in the asphalt plant burner due to malfunctions or project change over time. BB&WOLF do spare part replacements and maintenance so that your asphalt plant drying drum can operate for a long life and with high performance.