PU trailer spring tube is a kind of pipe commonly used in the connection of trailer air brake systems or other pneumatic equipment. Here is a detailed introduction to it:
Features
High elasticity:
Made of polyurethane (PU) material, it has good elasticity and flexibility, can withstand tension, compression and twisting to a certain extent, and is not easy to break. It can adapt to the vibration, bumps and different situations of the trailer during driving. Angle bending
Wear resistance:
It has high wear resistance, can resist friction with other objects during use, extend service life, and maintain good performance even under harsh road conditions.
Aging resistance:
It has good aging resistance, can withstand the erosion of natural factors such as ultraviolet rays, ozone, and oxidation. It is not easy to cause aging such as cracking, hardening, and brittleness. It can be used stably for a long time.
High pressure resistance:
It can withstand high air pressure, ensuring safe and reliable transmission of gas in high-pressure environments such as air brake systems, and will not rupture or leak due to excessive pressure.
Corrosion resistance:
It has certain corrosion resistance to most chemical substances, can resist the corrosion of water, oil, acid and alkali and other substances, and maintain the stable performance of the pipe.
Structural characteristics spiral shape:
it is a spiral structure. This design makes it have good elasticity and can stretch and shrink freely within a certain range, making it convenient for installation and use at different positions and angles. At the same time, it can shrink and store when not in use. , save space.
Double-layer or multi-layer structure:
Some PU trailer spring tubes adopt double-layer or multi-layer structures, the inner layer is mainly responsible for gas transmission and has good air tightness; the outer layer provides additional protection and enhancement effects, such as adding Wear resistance, impact resistance, etc., improve overall performance and reliability.
The tube body color can be customized (black, red, color change, blue, transparent)
name |
Metric threads |
length |
Outer diameter*Inner diameter |
Trailer spring air pipe |
M18*1.5 |
7.5m |
12*8mm |
8.5m |
9m |






