Cut tolerance on metric stock is +/- 2". Aluminum Round Tube 6060 Metric is a medium strength, easily machinable, and highly corrosion resistent alloy more closely related to 6063 than to 6061 but with more magnesium than 6063. This alloy is mainly found in Europe in metric sizing and is commonly heat treated to a temper with higher strength but low ductility. 6060 is also very good for anodizing.
Pack of 3 tubes
Tube is designed to act as structural support, whereas Pipe is designed to carry liquid/gas/material from one place to another.