The pneumatic tube carriers move through especially for pneumatic tube fabricated (gray) plastic pipe. There are also transparent, aluminum and stainless steel tubes available. On first sight the plastic transport tube looks the same as sewage pipe. However, they are not interchangeable. The diameter of the transporttube is much more accurate than the sewage pipe, the carriers could seize on these constrictions in the tube.
This plastic transport tube is available in different diameters, i.e.:
- 63 mm
- 90 mm
- 100 mm
- 110 mm
- 130 mm
- 160 mm
- 315 mm
Besides the transporttubes are also special fabricated bends. These are available in various radii.
During the first years of the pneumatic tube were particularly steel pipe used. But also the dangerous asbestos was widely used material. Beside round, there were also oval pipes.