Aluminum fin tubes, Low fin tubes, Spiral Slot tubes, High Frequency ERW fin tubes, ERW studded tubes, ERW H/HH fin tubes. Production equipment1.Four L/LL/KL fining lines, daily capacity around 3000 meters;2.Twelve extrusion fining lines, daily capacity around 4000 meters;3.Three hydraulic test lines up to 40MPa,4.One under water pneumatic test line;5.Computer controlled microscope projector6.One ...