The automatic cleaning line for used oil barrels uses high-pressure hot water to clean the inner and outer walls of the barrel at 360 degrees without dead angles . After air-drying, it can be further repaired and then sold as a container. The whole system includes Check line Outside cleaning line Internal cleaning line Airdry Repair line Oil-water separation device Sewage purification and reuse device Processing capacity: 20-200 per hour, can be customized