Seamless steel pipes (SMLS Pipe), as a type of steel pipe with a hollow cross-section and no seams around it, occupy an important position in the modern industrial field due to its smooth interior, uniform wall thickness, high tensile strength, strong pressure resistance, and high manufacturing precision.
As one of the world's largest producers and consumers of seamless steel pipes, China has a huge market size, and with the continuous development of the domestic industrial field, the market size will continue to grow rapidly. According to statistics, the global seamless steel pipe market size has exceeded hundreds of billions of dollars in recent years, and is expected to maintain a stable growth trend in the next few years.
Seamless steel pipes play an important role in the mining, transportation, storage and other links of industries such as oil and natural gas. These industries have high requirements for the high pressure, high temperature, and corrosion resistance of seamless steel pipes, thus providing a broad market space for seamless steel pipes. In addition, with the continuous increase in global demand for clean energy, the rapid development of the natural gas industry has also brought new growth points to the seamless steel pipe market. The demand for seamless steel pipes in the chemical industry, power industry, and machinery manufacturing industry is also increasing, which has promoted the continuous development of the market.
As of the latest information in 2025, the ranking of Chinese seamless steel pipe manufacturers is not fixed. It will be affected by many factors such as market share, production capacity, technological innovation, product quality and corporate reputation. However, some companies with high visibility and market share in the industry are usually considered to be top-ranked manufacturers. The following are some of the more well-known companies in China's seamless steel pipe industry (ranked in no particular order):
1. Baoshan Iron & Steel Co., Ltd
Baoshan Iron & Steel Co., Ltd., also known as Baoshan Iron & Steel and Baosteel, is located in Baoshan District, Shanghai, China. In February 2000, Baosteel Co., Ltd. was exclusively initiated and established by Shanghai Baosteel Group Corporation; in December of the same year, it was listed on the Shanghai Stock Exchange (stock code: 600019). Baosteel Co., Ltd. is one of the largest steel companies in China and a leading modern steel alliance company in the world. Its products are widely used in automobiles, home appliances, petrochemicals, machinery manufacturing, energy and transportation industries.
Baosteel's pipe products cover small and medium-caliber hot-rolled seamless pipes, special alloy seamless pipes,
cold-rolled and cold-drawn seamless pipes, medium and large-caliber high-frequency straight seam welded pipes, large-caliber straight seam submerged arc welded pipes, etc. Among the listed steel companies in the world, the crude steel output ranks second, the automobile plate and silicon steel output are ranked first, and it is one of the steel companies with the most comprehensive carbon steel varieties in the world.
Main products: high-end seamless steel pipes, oil pipes
Advantages: Leading enterprises in the global steel industry
2. Tianjin Pipe Corporation (TPCO)
Tianjin Pipe Corporation (TPCO), also known as "Big Seamless", is located in Tianjin Binhai New Area and started construction in 1989. After more than 20 years of development, it has become a leading enterprise in the domestic seamless steel pipe industry, and its comprehensive strength ranks among the top three in the world steel pipe industry.
The company is a comprehensive large-scale enterprise group integrating seamless steel pipes,
welded steel pipes, equipment manufacturing, copper processing, stainless plates, color-coated plates, gas cylinders and other industries. It is also the world's largest seamless steel pipe enterprise with the highest level of process technology and equipment and the most varieties and specifications. It has an annual production capacity of 3.5 million tons of seamless steel pipes, and its production and sales volume has remained the world's first for six consecutive years.
Main products: high-end seamless steel pipes, line pipes, oil well pipes, military pipes
Advantages: A global leader in seamless steel pipe industry, with leading independent R&D technology
3. Ansteel Group Corporation
Founded in December 1948, Ansteel Group Corporation is the first large-scale steel joint venture and the earliest steel production base to be restored in New China. It is known as the "cradle of the steel industry in New China". Ansteel products are widely used in many fields and have become the steel backbone of China's major power equipment.
Anshan Iron and Steel has developed into a large enterprise group with comprehensive supporting facilities in many fields such as sintering, pelletizing, ironmaking, steelmaking and rolling. Its product range is rich, including hot-rolled plates, cold-rolled plates, galvanized plates, color-coated plates and other steel products, as well as special steel products such as cold-rolled silicon steel, heavy rails, and seamless steel pipes. With its excellent product quality and innovation capabilities, Anshan Iron and Steel has taken a leading position in China's defense steel, shipbuilding and marine engineering steel and other fields, and has become a strong backing for major power equipment.
Main products: vanadium-titanium steel, railway steel, seamless pipes
Advantages: The comprehensive utilization technology of vanadium-titanium resources is internationally leading
4. Hunan Valin Steel Co., Ltd
Hengyang Valin Steel Tube Co., Ltd. is located in Hengyang City, Hunan Province, China. It is an enterprise with complete production units, advanced models and complete product specifications in the global seamless steel pipe industry.
Hengyang Steel has created three major product series of oil and gas pipes, pressure vessel pipes, and mechanical processing pipes, as well as HS series products with independent intellectual property rights. The products are distributed in more than 100 countries and regions on six continents around the world, and are sold to well-known companies in the oil, petrochemical, boiler, power generation, machinery, coal, chemical, nuclear power, construction and other industries.
Main products: welded steel pipes, pressure vessel pipes, oil casing
Advantages: Annual production capacity of 2.3 million tons, exported to many countries
5. Jiangsu Changbao Steel Tube Co., Ltd.
Jiangsu Changbao Steel Tube Co., Ltd. is a company focusing on the manufacture and service of special steel pipes. The company was founded in 1958 and listed on the Shenzhen Stock Exchange in 2010 (stock code: 002478). The company is located in Changzhou, Jiangsu Province, China, with three major manufacturing bases in Changzhou, Jintan and Oman, with an annual output of 1 million tons of special pipes. Changbao Group is a professional manufacturer of various types of small and medium-caliber seamless steel pipes, focusing on the production, service and research and development of pipes for petroleum and petrochemical, power plant boilers, engineering machinery, etc.
6. Hunan Standard Steel Co., Ltd (HSCO)
Hunan Standard Steel Co., Ltd (HSCO) is a subsidiary of Husteel Industry Group, an ISO 9001:2008 certified company located in Changsha, Hunan Province, China. It is a well-known manufacturer, stockist and exporter of carbon steel seamless pipes, stainless steel seamless pipes, structural profiles, accessories and oil well pipes. The product materials include stainless steel, carbon steel and alloy steel. The company has obtained IS09001, IS014001, OHSAS18001, API 5L, API 5CT, CE, DNV, ABS, FCP and other certifications. Husteel's products have standard sizes and can be produced according to customer requirements and drawings. They are widely used in nuclear power plants, thermal power plants, atomic power plants, oil and gas, petrochemicals, fertilizers, chemicals and pharmaceuticals.
Main products: seamless pipes, welded pipes, stainless steel pipes,
oil casing and tubing, pipe fittings
Advantages: China's leading steel pipe manufacturing company, products are exported to many countries
7. Taiyuan Iron and Steel (Group) Co., Ltd. (TISCO)
Taiyuan Iron and Steel (Group) Co., Ltd., one of China's top 500 companies, a large-scale steel conglomerate in China, the world's largest stainless steel company with the highest level of technical equipment and the most complete varieties and specifications, one of the most socially responsible companies in the country, and a model enterprise in Shanxi Province.
Main products:
stainless steel seamless pipes, high-strength and tough steel
Advantages: A subsidiary of Baowu Steel Group, it has participated in the formulation of many national standards and has leading technology
8. Tianjin Youfa Steel Pipe Group Co., Ltd.
Tianjin Youfa Steel Pipe Group Co., Ltd. was founded in 2000. The group's headquarters is located in Daqiuzhuang Town, Jinghai District, Tianjin, and is a listed company on the main board of the Shanghai Stock Exchange. Youfa Group is a large enterprise group integrating the production and sales of straight seam welded pipes, hot-dip galvanized steel pipes, square and rectangular steel pipes, hot-dip galvanized square and rectangular steel pipes, lined plastic composite steel pipes, plastic-coated composite steel pipes, spiral welded pipes, stainless steel pipes and pipe fittings, disc buckle scaffolding pipes, oil pipes, pipe fittings and other products.
Main products: welded pipes, galvanized steel pipes, stainless steel pipes
Advantages: China's top 500 manufacturing companies, products are exported to more than 100 countries
Please note that this list is not comprehensive and the market position of enterprises may change over time. In addition, seamless steel pipe manufacturers are not limited to China, there are many other well-known manufacturers around the world. If you need the latest ranking information, it is recommended to consult industry reports or consult professional market research institutions.
Read more: Seamless Steel Pipe Sizes and Weights or Types of Seamless Carbon Steel Pipes
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