What are the listed companies that produce steel pipes?

Special steel concept stocks (related stocks) Xinxing cast pipe: Xinxing cast pipe is the largest cast pipe manufacturer in the world, and its products are mainly cast pipes, excellent talents and special steel. The company has a production capacity of1100,000 tons of special steel; Ordinary stainless steel pipe 1 1.5 million tons, high-end stainless steel pipe (including bimetallic composite pipe) 50,000 tons; The radial forging of 36,000 tons of high-end castings and forgings has been put into production, the precision forging of 80,000 tons will be put into production in 20 12, and the large castings and forgings of150,000 tons will be put into production in 20 13. The company will also benefit from the development of the special steel industry. Xining Special Steel: As an absolute holding listed company of Xigang Group, Xining Special Steel is the largest special steel enterprise in the western region, with steel production capacity150,000 tons and wood production capacity130,000 tons. As the backbone of the special steel industry, Xining Special Steel has good investment value, complete production lines, many star special steel products and rich mineral resources. Daye Special Steel: Daye Special Steel is a large steel enterprise. It is the production base of bearing steel, gear steel, spring steel, die steel and high-precision medium-thick seamless steel pipe in China, ranking among the top 500 industrial enterprises in China. The leading products are gear steel, bearing steel, spring steel, tool steel, high-temperature alloy steel, high-speed tool steel and other special steels. Products sell well at home and abroad and are exported to nearly 30 countries and regions on five continents. Fushun Special Steel: Relying on the Group's advantages in capital, technology, channels and procurement, Fushun Special Steel has made great contributions to national defense. It is a large-scale special steel key enterprise and a military material research and development production base. Known as the cradle of China special steel, it has successively smelted the first stainless steel furnace, the first ultra-high strength steel furnace, the first high speed steel furnace and the first high temperature alloy furnace for China. It also provided a large number of key new special steel materials for China's first artificial earth satellite, the first missile, the first submarine and a number of national key national defense projects. China is the main unit of military special steel materials, and it is in a leading position in the industry. Zhongyuan Special Steel: As a military enterprise, Zhongyuan Special Steel is different from other steel enterprises in Henan Province. The company has been taking a differentiated route, producing industrial special equipment and research and development, production and sales of large-scale special steel precision forgings. It is a large forging manufacturer with complete production lines from smelting, forging, heat treatment to mechanical processing in China. The excellent Zhongyuan Special Steel Plant, which was originally a military enterprise under the Ministry of Ordnance Industry, was reformed and established several times, and in 20 10, it issued 9 million shares of paint to the public for the first time. As a veteran military enterprise, the company has accumulated great advantages in talent reserve, manufacturing equipment and technology.