Seamless metal clad pipes and tubes in various sizes ranging from a one inch outside diameter through a 42 inch diameter and produced through the process of centrifugal casting in two stages to achieve a bonded and unified product; metallic cast pipes and tubes, namely, bi-metallic cast pipes and tubes composed of purchaser-specified metallic grade combinations, including carbon plus chrome carbide, carbon plus alloy 825, carbon plus alloy 625, carbon plus stainless steels in the 300 and 400 ...