Are you worried about galvanized steel would be attacked by salt water, corrosive fluids and abrasive slurries? What is the best choice for harsh environments? Polymer coating is the exact choice which can serves 100+ years proven by a number of projects.
Polymer coated pipe culvert
Corrugated metal pipes assembled by structural plates have been widely accepted all through the world for their simple installation and cheap transportation cost. As an additional protective layer, polymer coating promises you longest serve time and free maintenance even in awful environments. Structural plates with super and ultra corrugation are applicable to polymer coating.