Scope and field of application
This standard specifies requirements and methods of test for single-ply tubing of polymide (as in DIN 73378) FOR USE IN THE AIR BRAKING SYSTEMS OF ROAD VEHICLES AND TRAILERS (cf, definition in DIN 70010). The polyamide materials covered by this standard (cf. Clause 6) are resistant to ageing under normal service conditions (i.e the working pressure and temperatures specified in tables 2 and 3), and, when not under pressure, for three hours at 125℃。
This standard does not apply to tubing connecting trailers to the tow vehicle.
The mounting of tubing on cehicles is dealt with in DIN 74324-2. If any interest, pls download the pdf.