Spiral tubes used for air distribution between the truck and the trailer. Tubes are made of different materials, such as PA12, TPU and TPC-ET. The spiral tube is at both ends provided with a thread and protectors that protect the tube from damage most highly stressed points. Standard colors for polyurethane tubes are: red, yellow and black, in the TPC-ET tubes the most common color is black.
All spiral tubes are highly resistant to oils, breaking, rapture of fittings and UV.
The parameters for the most common types of spiral tubes:
Parameters TPU spiral tubes:
Numbers of turns: | 24 |
Working length: | ~4 m |
Tube diameter x wall thickness: | 12 x 2 mm |
The outer diameter of the spiral: | 70 ±10 mm |
Parameters TPC-ET spiral tubes:
Numbers of turns: | 20 |
Working length: | ~4 m |
Tube diameter x wall thickness: | 12 x 1,5 mm |
The outer diameter of the spiral: | 105 ±10 mm |