TUBO FLESSIBILE CON MARCATURA DI IDENTIFICAZIONE DELLA CURVATURA NATU-RALE, SUO PROCEDIMENTO DI PRODUZIONE E DI INSTALLAZIONE

摘要

The flexible tube 10 has a wall formed by at least one layer of elastomeric material and possibly one or more layers of reinforcement material and/or one or more layers of plastic material, and it has a natural curvature of its longitudinal axis 36 resulting from the vulcanisation process. On the outer surface of the wall of the tube is placed a marking 30 able to identify said natural curvature.