Tubular connecting piece

Thermoplastic tubular support for connecting to a fluid line on a container (6) comprises a first part (1) and a second part (2) containing a reinforcing filler whose amount and type are selected so that the creep tendency and swellability of the second part are the same as for the first part. A high strength connection is formed between the second part and the container. The heat shape stability of the second part is the same as the container and almost the same as the first part.