The table below shows the rope type and recommended corrosion protection to achieve a given lifetime.
It contains general indications based on the current technical literature and it should be considered as a support for the selection of the most suitable rope type and corrosion/protection. These general indications have not to be intended as mandatory or stringent rules.
Corrosion depends on a high variety of circumstances, such as environmental conditions, like water salinity, temperature, flow speed, etc. and physical characteristics of the coating and the material to be protected against corrosion.
For heavy duty environment zinc or Zn 95 Al 5 alloy coating can be delivered, as per EN10264 class A or API 9A class A.
In both cases a certain reduction on the given MBF values has to be considered.