This alternative to cable railing by Goshen, Ind.–based Viewrail features ultra-marine-grade 2205 stainless steel rods that can be used in humid environments and bent for curved applications. The 0.25″-diameter rods come with a brushed stainless finish. viewrail.com
Stainless Rod Railing by Viewrail
The corrosion-resistant rods can be used in humid environments such as coastal areas.

Courtesy ViewRail