Patent ID: 6659137
Filing Date: 2003-12-09
Classification: B21C,B21D,Y10T

Abstract:
A two-layer clad pipe comprising:a metal inner pipe; and an outer pipe inwardly fitted tightly against an outer perimeter surface of said inner pipe, said outer pipe being formed from a metal different from a metal used to form said inner pipe; wherein said metal used to form said inner pipe or said outer pipe is selected from the group consisting of: stainless steel, aluminum, aluminum alloys, magnesium-based metals, copper, copper alloys, titanium-based metals, and nickel-based metals; and wherein said inner layer is cut to a length and said outer layer is cut to a length equal to said length of said inner layer at at least one end of said two-layer clad pipe; and wherein a surface of said outer pipe has greater corrosion-resistance than a surface of said inner pipe.