... 4. Thickness: 0.3mm-5mmWe have more than 8 years experience about tube extrusion. We have 10 production lines and complete quality ... for lighting, furniture, package and so on. The main diameter of the round tubes are as below (unit: mm):1.5 ... ,2.5,3,4.5,6,8,9,10,12,12.7,14,15,16,19,20 ...