LONGDA.LONGDA Company, established in Lishui, Zhejiang in 2005, is a modern enterprise specializing in the production of industrial seamless stainless steel pipes. With an annual production capacity of 20,000 tons, the company offers a comprehensive range of products covering various austenitic stainless steels, duplex steels, and nickel-based alloys with outer diameters from 6 to 720 mm and wall thicknesses from 1 to 50 mm. Equipped with 20 cold-drawing lines, 15 cold-rolling lines, and advanced inspection equipment including comprehensive spectroscopic flaw detection, the company produces high-quality boiler tubes, heat exchanger tubes, and fluid tubes. These products are widely utilized in critical industrial sectors such as petrochemicals, aerospace, power generation, and pressure vessels. LONGDA stands as one of China's leading enterprises in this field, distinguished by its comprehensive facilities and robust technical capabilities.