The difference between oil-injected screw and oil-free screw air compressor
Q: What is the difference between oil-injected screw and oil-free screw air compressor? A: Oil-injected screw air compressor, as the name suggests, when the air compressor head is working, the inside of the head is lubricated and cooled by lubricating oil. Therefore, the oil content in the compressed gas is relatively large, and the latter