They are manufactured by two bellows bound together with an intermediate pipe, this kind of expansion joint compensate the axial, lateral, angular movements, also simultaneously.

They do not resist pressure thrust caused by internal pressure, and are generally used to compensate remarkable lateral movements, also combined with minor axial and/or angular movements.

Moreover, they can also be manufactured with steel bellows or special alloys, according to their use, for example AISI 316Ti, AISI 310, HASTELLOY, INCONEL, AVESTA 904L, MONEL 400, INCOLOY, and with the ends in special materials like CORTEN, A335 P11, A333 Gr.6 and others upon request.