Gives the dimensions and marking for thermoplastics tubing for use in air braking
systems on road vehicles. The tubing specified in this part belongs to two possible
categories: a) tubing for use up to a maximum working pressure of 1 000 kPa b)
tubing for use up to a maximum working pressure of 1 250 kPa and within a
temperature range of -40 Deg C to +100 Deg C Not covered in this part is coiled
tubing for use between tractors and trailers.