Over the first several weeks of contact with seawater, copper-nickels naturally create a thin protective surface layer, which offers its long-term resistance. 
these Fasteners in custom-built thicknesses and sizes according to the particular requirements of esteemed customers as a supplier, stockiest, exporter, and manufacturer. 

Cupronickel Fasteners perform well in seawater and have minimal corrosion rates as long as the maximum design flow velocity is not exceeded. 
This velocity is determined by pipe diameter and shape. 
Cu-Ni Fasteners are resistant to crevice corrosion, stress corrosion cracking, and hydrogen embrittlement, all of which can be problematic with other alloy systems.