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See Chinese contents: QC/T 80-2022 QC/T 80-2022: Road vehicles - Polyamide(PA) tubing for air braking systems
This document specifies the terms and definitions, materials and structures, technical requirements, test methods, inspection rules, marks, packaging, transportation and storage requirements for polyamide tubing and tubing assemblies used for air braking systems. This document is applicable to the air braking pipeline system, of which the maximum working pressure is 1.25MPa and below, and the working temperature is -40¡ãC~100¡ãC. This document does not apply to the polyamide spiral tube assembly for the air braking system between the tractor and the trailer.
