Greater spring charges than rubber expansion joints. Gives constrained versatility when compared with rubber, which may well limit movement in some cases. The strength of metal is undoubtedly a benefit in higher pressure apps; however, the relative stiffness or spring charges coupled with thrust forces need to be cautiously examined. https://emiliofzsme.blogs-service.com/70418059/how-to-select-expansion-joint-for-piping-no-further-a-mystery