友发集团：公司主营业务是各品类焊接钢管

Core Viewpoint - Youfa Group (601686) is a leading manufacturer of welded steel pipes in China, with a strong market presence and continuous growth in production and sales [1] Group 1: Company Overview - The main business of the company is various types of welded steel pipes, with 10 production bases in operation and 3 additional bases under construction [1] - The company has maintained the largest production and sales scale in the industry for 19 consecutive years, with an annual production capacity exceeding 20 million tons and a net sales volume of over 13 million tons [1] - Youfa Group owns brands such as "Youfa" and "Zhengjinyuan," and holds a market share of over 35% in hot-dip galvanized round pipes [1] Group 2: Industry Position - The company is recognized as a national champion in the manufacturing sector for welded steel pipes and steel-plastic composite pipes [1] - Welded steel pipes are crucial for fluid transportation and structural support, with applications in water supply, drainage, gas supply, heating, fire protection, steel structures, construction projects, equipment manufacturing, modern agriculture, renewable energy, and transportation facilities [1] - The products of Youfa Group have a wide range of applications both domestically and internationally [1]