Profile: D & S Supply Co. distributes marine and industrial products. Our product line includes pipe, valves, fittings, and flanges. We serve the marine and power plant industries. We provide pipe made of stainless steel, carbon steels and specialty alloys. Our fitting and flanges include pressure, malleable iron, flanges and buttweld. Our gate valves are used for flow control and handling for refining, oil & gas production, pulp & paper, waste water treatment, chemical processing, and materials for construction, which include bronze, cast iron, cast steel & stainless steel.