Metal hose mainly refers to a helical corrugatedtube; another is a ring-shaped bellows.
Spiral corrugated pipe is corrugated arranged inspiral pipe-shaped shell, a Helix angle betweenadjacent circles of two, all the ripples can beconnected by a spiral.
Bellows ring is a closed ring-shaped corrugatedtube-shaped shells, waves and the wave formed bythe ring ripple series. Circular welded bellowsmade of seamless tubes or pipes to be processed.Subject to processing constraints, than spiralcorrugated pipe, the one-tube is usually shorterin length. Bellows ring has the advantages ofgood elasticity, rigidity is small.