scope:

2 Scope

This specification covers the requirements for multi layer coextruded thermoplastic connecting tubing supplied to finished dimensions and sizes in accordance with the relevant engineering drawing used in the fuel-lines system, for use at a service temperature range between -40°C and +120 degrees C. The fuel tubing with an inner layer made of PA 6 (e. g. Type A and C), shall not be used in combination with zinc-plated metal fittings (risk of stress cracking). Direct contact between the fuel pipes and materials containing chlorine, as for example adhesive tapes made of PVC is not allowed, because nascent chlorine resulting from high temperature decomposition may cause cracks in the PA 12 outer layer.