UG-30FM 30W fiber laser marking machine with roller rotary device for large diameter metal tube/cylinder marking In the video, the metal tube diameter is 160mm Vertical shaft height 750mm, can for 300mm diameter marking at maximum UCVM-k1Y6rl9XWcX9CbQsNzg laser marking #Large #Diameter #Metal #Tube #Fiber #Laser #Marking #Machine #Roller #Rotary #Device