Shengli Oil & Gas Pipe Holdings Limited, an investment holding company, designs, processes, manufactures, and sells welded pipes for oil and gas pipeline, and other construction and manufacturing applications in Mainland China and Hong Kong. The company operates through two segments, Pipes Business and Trading Business. It produces submerged-arc helical and longitudinal welded pipes that are primarily used to transport crude oil, refined petroleum products, natural gas, and other related products, as well as used for the oil and infrastructure industry.