What is the cause of damage to the metal braided hose?

Stainless steel wire mesh sleeve, as part of the compensator, mainly plays a protective role for the bellows and the role of bearing the pressure of the medium inside the bellows. The mesh sleeve is wrapped around the outside of the bellows, and the two ends are welded to the bellows and end rings and joints.

Improper installation, braided wire mesh pull off.
 
Metal braided hose in the installation process, due to improper installation, or bear the pressure is too high, metal hose will be affected by stretching and twisting, when the stretching or twisting stress generated beyond the strength of the hose wire mesh sleeve, will make the hose three one welded parts of the mesh sleeve or other parts of the mesh sleeve pulled off, and then the bellows outer drum stretching damage, causing media leakage, for this hose design and selection requirements are accurate, the installation Correct and error-free.
 
False welding causes the mesh sleeve to pull off.
 
Due to the quality of welding, so that the bellows, ring and wire mesh set in the trinity of the welding process caused part of the wire falsely welded. So that the compensator into the pipeline due to uneven stress on the steel wire, under the action of medium pressure, false welding wire first pull off, so that the entire wire mesh set pull off, thus leading to the failure of the bellows drum, the occurrence of danger. In order to prevent the occurrence of such cases, should improve the quality of welding, factory hose before the water pressure and gas-tight test assessment, qualified before leaving the factory.