Stainless Steel Bellows Expansion Joint With Flange

Flange type bellow expansion joint with stainless steel in working condition need to absorb pipeline displacements under pressure. The expansion bellows, as the main component, must have high pressure-bearing capacity. To obtain a larger deflection within a limited length of the expansion joint, a thinner wall thickness is preferable. When selecting wall thickness,the requirements of pressure range,compensation displacement,and pressure-bearing capacity must be considered.These three factors create conflicting demands for wall thickness selection.To meet the compensation amount and pressure-bearing requirements,manufacturers design the bellows with a thin-walled,multi-layer structure, resembling a closed spring in appearance. The stress in flange bellows expansion joint with stainless steel under working conditions generally consists of pressure stress and displacement stress. When selecting wall thickness, it is also necessary to consider the pressure-bearing strength, fatigue life o…