If customer’s work just cutting metal tube (round metal tube ,square metal tube and weight Left and right symmetry).Professional metal tube fiber laser cutting machine LXF6020T is good choice. Regarding cutting metal tube,it is professional. The MAX rotate speed: 170r/min.MAX Chunk Feeding Speed: 140m/min.Position Accuracy : 0.05mm.Repeated Position Accuracy : 0.03mm.Max Power :4000W 6000W and 8000W. For diameter of chunk rotary,we have 160mm/220mm. Other bigger size you need to ask seller whether it can customized or not. 1500W 2000W 3000W laser power is sold most at present.