BSD7500 metallic pipes are composed of an inner tube of corrugated stainless steel with parallel spirals and reinforcements of one or two metallic meshes of braided wires. The qualities of the stainless steels are AISI 321 or AISI 316L for the inner tube and AISI 304 for the reinforcement meshes in general and particularly for special applications in AISI 316L.
The main qualities of the BSD7500 flexible pipes compared to hydraulic and industrial rubber hoses are: