Hastelloy pipe, as a type of high-performance corrosion-resistant alloy pipe, is developed and produced by Hastelloy International Corporation of the United States. It uses nickel as the main component, and adds various alloying elements such as chromium, molybdenum, and tungsten to form a unique chemical composition and microstructure. This allows Hastelloy pipe to maintain excellent corrosion resistance and mechanical properties in various harsh environments, especially in extreme working conditions such as high temperature, high pressure, and strong corrosion.