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What are the brands of steel-plastic composite pipe in China?
1. Tianjin Steel Pipe: Tianjin Steel Pipe Group Co., Ltd., also known as "Tianjin Great Seamless", is located in Tianjin Binhai New Area and is the steel pipe base of China energy industry. Construction started in 1989, the hot test was successful in 1992, and it was officially put into production in 1996. The main products are oil casing, oil pipe and pipeline pipe, high-pressure boiler tube, high-pressure gas cylinder pipe, hydraulic support pipe and other professional pipes. At the beginning of its establishment, the company introduced the world's most advanced equipment and technology of steelmaking, pipe rolling, pipe processing and direct reduction iron from Germany, Italy, the United States and Britain, respectively, and equipped with a perfect automation system, becoming the most advanced and largest professional oil pipe manufacturer in China. Since it was put into production, it has always maintained the leading edge of technical equipment through continuous technical transformation.

strengthen and expand the main business of steel pipe, improve industrial concentration and create scale advantages. The steelmaking system has three ultra-high power electric arc furnaces, the pipe rolling system has four models (MPM, PQF, ASSEL and REM) and six sets of rolling mills, and the pipe processing system has 26 production lines. The annual production capacity of seamless steel pipes can reach 3.5 million tons, making it the largest seamless steel pipe manufacturer in the world. Adjust the industrial structure, form a high-end, high-quality and high-tech industrial layout, build a number of high-level projects such as copper materials, stainless steel plates, color-coated plates and high-pressure gas cylinders, develop new industries such as equipment manufacturing, international trade and logistics, and build it into a comprehensive large-scale enterprise group with alternating and coordinated development of multiple industries. The comprehensive index of economic benefits has been in the forefront of key steel enterprises in China for many years. Ranked 99th among the top 5 Chinese enterprises and 38th among the top 5 manufacturing enterprises.

improve product quality, enhance corporate credibility and build brand advantages. Adhering to the marketing service concept of "conveying true feelings and creating brilliance", we have built a perfect marketing process and service guarantee system to provide users with good pre-sales, mid-sales and after-sales services, and realized the transformation from product marketing to brand marketing. The domestic market share of oil casing remains around 4%, and its products are exported to nearly 1 countries and regions. Oil casing has become a "famous brand product in China". Seamless steel pipe has become a "famous brand export commodity in China". TPCO trademark was recognized as "China well-known trademark". Won the title of "National Excellent Enterprise in Quality Management"

2. Youfa:

Tianjin Youfa Steel Pipe Group Co., Ltd. was established by nine subsidiaries of the former Tianjin Youfa Steel Pipe Group Co., Ltd. after assets reorganization, aiming at standardizing the business behavior of enterprises, promoting the main steel pipe business to enter the capital market, and finally realizing the rapid take-off of enterprises. Founded on July 1st, 2, Youfa is headquartered in Daqiuzhuang, Tianjin, the largest steel pipe production base in China. It is a large steel pipe manufacturing enterprise integrating the production of straight welded pipes, hot-dip galvanized steel pipes, spiral welded pipes, rectangular pipes and steel-plastic composite pipes. At present, it has formed three production bases in Tianjin, Tangshan and Handan, with 2 subsidiaries and 7 subsidiaries, with a total of more than 6, employees. It has two brands of "Youfa" and "Zhengjinyuan", more than 6 straight welded pipe production lines, more than 4 hot-dip galvanized steel pipe production lines, 9 spiral welded pipe production lines and 2 steel-plastic composite pipe production lines. At the same time, it has a national-level accredited laboratory and a Tianjin-recognized enterprise technology center. Since 21, the production and sales of steel pipes have increased by more than one million tons every year for four consecutive years. In 213, 8 million tons of steel pipes were produced.

in March 28, the brand "Youfa" was recognized as a "well-known trademark in China" by the Trademark Office of the State Administration for Industry and Commerce, and the brand "Youfa" was awarded the title of "Tianjin Famous Brand Product" by the Tianjin Municipal Government for many years. Tianjin Youfa Steel Pipe Group ranked among the top 5 Chinese enterprises and the top 5 manufacturing enterprises in China for eight consecutive years. In 213, Tianjin Youfa Steel Pipe Group ranked 459th among the top 5 Chinese enterprises, 243rd among the top 5 manufacturing enterprises in China, 136 among the top 5 private enterprises in China and 9 among the top 5 manufacturing enterprises in China.

3. Jiuli:

Zhejiang Jiuli Special Materials Technology Co., Ltd. (formerly Zhejiang Jiuli Stainless Steel Pipe Co., Ltd.) was founded in 1987 and is located in Zhenxi, Huzhou City, Zhejiang Province, on the south bank of Taihu Lake in the center of the Yangtze River Delta. The company has established world-advanced production lines for seamless stainless steel pipes, corrosion-resistant alloys and high-temperature alloys (extrusion, piercing, cold rolling and cold drawing) and large, medium and small-caliber welded pipes, and has been committed to providing safe, reliable, high-performance, corrosion-resistant, pressure-resistant and high-temperature-resistant stainless steel pipes and special materials solutions for industrial pipeline systems.

the company has established a perfect quality assurance system, and on the basis of running the ISO91:2 quality assurance system, the nuclear quality assurance system of the National Nuclear Safety Administration has been implemented in compliance with the standards. In 24, the company obtained the Special Equipment Manufacturing License issued by the General Administration of Quality Supervision, Inspection and Quarantine. It has passed the certification of ISO141:24 and OHSAS 181:1999. The company has also passed the directive certification PED97/23/EC of European pressure equipment and the factory certification of CCS China Register of Shipping, GL Lloyd's Register of Shipping, BV French Register of Shipping, DNV Norwegian Register of Shipping, ABS american bureau of shipping and LR Lloyd's Register of Shipping in Britain.

The company is a state-level high-tech enterprise, a leading enterprise in Zhejiang Province, with provincial R&D centers and Post-Doctoral Research Center. The company has always adhered to the enterprise spirit of "working hard, winning by quality, taking credit as the foundation" and the business philosophy of "serving users, contributing to society and developing itself with mature technology and reliable product quality", and has a high reputation among our customers and society. The company won the honor of "National May 1 Labor Certificate" and was awarded the titles of "Zhejiang Civilized Unit" and "National Contract-abiding and Credit-abiding Unit", and the "Jiuli" brand stainless steel pipe was also awarded the "Gold Cup Award for Physical Quality of Metallurgical Products" by China Iron and Steel Industry Association. Through unremitting efforts and brand building for more than 2 years, jiuli has become a well-known firm in Zhejiang Province, and its trademark is China's well-known trademark. At the same time, Jiuli and Jiuli trademarks have been registered in more than 5 countries around the world.

4. Hailiang:

Zhejiang Hailiang Co., Ltd. (hereinafter referred to as "Hailiang Shares" or "Company") is a Sino-foreign joint stock limited company controlled by Hailiang Group Co., Ltd. Since its establishment in 21, the company has been committed to the research and development, production, sales and service of high-grade copper products. It is the world's largest copper alloy tube manufacturer and one of the internationally renowned copper processing enterprises, the largest copper tube exporter and the second largest copper tube producer in China, and the top three precision copper rod producers and one of the most important copper rod producers. The company was listed on the Shenzhen Stock Exchange on January 16th, 28 with the stock code of 223.

By December 31st, 212, Hailiang had total assets of 6,435,757,7 yuan, net assets of 2,693,651,6 yuan, asset-liability ratio of 58.15% and more than 4, employees. In 212, the company realized an operating income of 1,349,952,7 yuan, a total profit of 247,87,9 yuan, and a net profit attributable to shareholders of listed companies of 233,529,2 yuan.

Hailiang's products can be divided into two series: copper tubes and copper bars, including nearly 1 brands and thousands of specifications, which are widely used in air conditioning and refrigerator refrigeration, building water pipes, seawater desalination, equipment manufacturing, automobile industry, electronic information, transportation, hardware machinery, electric power and other industries. The company has made a strategic layout of its own copper processing industry in the world, with a perfect production and marketing network. Hailiang has four production bases in Zhejiang, Shanghai, Anhui and Vietnam, and has accumulated a large number of high-quality and stable customers at home and abroad. The company has business dealings with customers in more than 1 countries and regions around the world. A large number of domestic customers of the company are leading enterprises in downstream industries, and there are more than 3 domestic and foreign customers. In recent years, the company's copper tube products continue to maintain the leading position in the export of precision copper tube industry, and its international competitiveness is increasing.

Hailiang Joint-stock Technology Center is a national enterprise technology center, with CNAS national accreditation laboratory, key laboratory of Ministry of Education, national Post-Doctoral Research Center and provincial enterprise research institute. The company has strong independent innovation ability, and has made obvious technological breakthroughs in the process, mold and new product development of copper pipes, copper water (gas) pipes and fittings, copper alloy pipes and precision copper bars for air conditioning and refrigeration. The technologies and products developed by the company have won 7 science and technology awards in Zhejiang Province and 15 science and technology awards in Nonferrous Metals Industry Association, and many other international, industrial and provincial technological progress awards.

5. Xinyuantai:

Xinyuantai Steel Pipe Group Co., Ltd. is located in Cangzhou Economic Development Zone, 8 kilometers away from Huanghua Port and 18 kilometers away from Tianjin Port, close to beijing-shanghai railway and National Roads 14 and 17, with very convenient transportation.

the group has five wholly-owned and holding subsidiaries, namely xinyuantai steel pipe group co., ltd., julong co., ltd. (under construction), Hebei litonglian seamless steel pipe co., ltd., Cangzhou xinyuantai storage and transportation co., ltd. and Cangzhou litonglian storage and transportation co., ltd.

the group company has 41, square meters of land, one straight seam production line, four spiral steel pipe production lines and one hot-rolled seamless steel pipe production line. It mainly produces three types of steel pipes: straight seam welded steel pipes in ERW, double-wire double-sided submerged arc welded spiral steel pipes and hot-rolled seamless steel pipes. The annual production capacity is 5, tons, including: 2, tons of φ 219-222 spiral welded pipe with wall thickness of 6-2; Produce 1, tons of high-quality ERW straight welded pipe with φ 219-46 wall thickness of 6-14; Production of φ 14-273 high-precision hot-rolled seamless steel pipe with wall thickness of 5-35mm is 2, tons.

the large-diameter high-grade welded steel pipe project jointly built by the company and Shougang is the fifth subsidiary of our company, with a total area of 5 mu, of which the first-phase production workshop covers an area of 5944.5m m. It is expected that the first production line will be put into trial operation at the end of 21. The new project will build four production lines of spiral submerged arc welded steel pipes with high standards of φ 82, φ 12, φ 142 and φ 182. Our company is the largest steel pipe manufacturer with the most complete varieties and specifications in Cangzhou area. It is also one of the few professional steel pipe manufacturers in China that integrates the production of straight welded pipe, spiral welded pipe and hot rolled seamless steel pipe.

xinyuantai steel pipe group has always adhered to the management philosophy of "quality first, honesty is golden", and the company's "Seven Stars" trademark is a famous trademark in China. The company has been rated as a contract-abiding and trustworthy unit by the Administration for Industry and Commerce for many years, and has been awarded AAA credit rating by the Agricultural Bank of Hebei Province and China Construction Bank for many years.

the group has successively passed the ISO 91:2 quality management system certification, OHSAS 181:21 occupational health and safety management system certification, and ISO 141:24 environmental management system certification, and obtained the national (pressure pipeline) special equipment manufacturing license and the logo use license of api gravity API 5L and API 5CT products. In 27, it became a qualified supplier of PetroChina Equipment Purchasing Department (Energy No.1 Network).

6. Changbao:

Suchang Baosteel Pipe Co., Ltd. is a professional producer and service provider of all kinds of energy pipes, one of the key manufacturers of oil well pipes and small-caliber alloy high-pressure boiler tubes in China, and an A-level (excellent) supplier of "Energy No.1 Network" of China Petroleum Sales Corporation and three leading enterprises in the boiler industry. The company's products are used in oil, electric power, nuclear power, natural gas and other energy industries, and are widely exported to Europe, America, the Middle East, CIS, Southeast Asia and Africa and other countries and regions.

on February 2, 28, the company was changed into a joint stock limited company as a whole, and it was listed on the small and medium-sized board in Shenzhen on September 21, 21. The stock code is 2478, and the total share capital after issuance is 4.1 million shares. In the next three years, with the help of the capital market, the company will complete the layout of four major energy pipe industries, namely, pipes for oil exploration, high-pressure boiler tubes for large power stations, natural gas transmission pipes and nuclear power pipes.

The company is located in Changzhou City, Jiangsu Province, a developed area in the Yangtze River Delta. Its factory covers an area of 26, square meters, adjacent to the Shanghai-Nanjing Expressway and the Beijing-Hangzhou Grand Canal, with a special railway line leading to the Shanghai-Nanjing Railway, and the traffic is very convenient.

the company is equipped with the first φ12 pipe jacking hot-rolled steel pipe mill in China, with an annual production capacity of 18, tons. Changzhou Changbao Jingte Steel Pipe Co., Ltd., a holding company, has precision cold-drawn and cold-rolled pipe production lines with an annual production capacity of 1, tons. Jiangsu Changbao Pleasant Steel Pipe Co., Ltd., a holding company, is equipped with φ177 hot-rolled steel pipe mill with an annual production capacity of 15, tons. The production of oil well pipes, boiler tubes, precision mechanical pipes, geological pipes, marine pipes, petrochemical pipes, structural pipes, pipeline pipes and other varieties form a series. The production capacity of the main products is 35, tons of refined oil well pipes and 1, tons of high-pressure boiler tubes.

the company has advanced technology and equipment, complete technology and complete detection means. It has passed ISO91, 141 and 181 management system certification, American API logo certification, TUV certification, EU PED and AD W2 certification, and Russian GOST certification, and has the supplier access certificates of PetroChina's "Energy No.1 Network" in membership certificate and some large domestic oil fields, as well as the A-level supplier certification of boiler plants of three major power groups in China and the qualified supplier certification of Shanghai Electric Nuclear Power Equipment Company.

7. Yulong:

Wuxi Yuqi, an important town in the south of the Yangtze River with beautiful scenery and outstanding people, has bred a large number of outstanding private enterprises with its unique geographical advantages, developed transportation network and perfect infrastructure construction.

Jiangsu Yulong Steel Pipe Co., Ltd. is one of the most outstanding new stars in this magical land. Jiangsu Yulong Steel Pipe Co., Ltd. was formerly Wuxi High Frequency Welded Pipe Factory. After 3 years of market baptism, it got rid of the institutional constraints of planned economy and became the largest production base of spiral seam submerged arc welded steel pipes in East China. The company covers an area of 32, square meters, with total assets of 7 million yuan, more than 1, employees and annual sales income of more than 3 billion yuan, making it one of the top 5 private enterprises in China. It is also one of the most powerful comprehensive manufacturers specializing in the production of steel pipes for oil, natural gas and water transportation and large steel structures in China. Yulong Co., Ltd. has 1 sets of φ 219-φ 254 SAWH spiral seam submerged arc welded steel pipe units with an annual production capacity of 4, tons. Φ1422 Φ813 SAWL longitudinal submerged arc welded steel pipe sets, with an annual production capacity of 25, tons; Two sets of Φ168 Φ58 HFW straight seam high frequency resistance welded steel pipes, with an annual production capacity of 2, tons; One set of 4×4 25×25 3×3 square rectangular tube units, with an annual production capacity of 2, tons; Two sets of φ 92φ 223PP/3PE/FBE internal and external anticorrosion production lines, with an annual production capacity of 2.5 million square meters.

Yulong is a director of China Steel Pipe Association, China Cold-formed Steel Association, China Building Metal Association, a member of China City Gas Association, a qualified supplier of China Oil and Gas Pipeline Bureau and a first-class qualified supplier of sinopec group. The "Yulong" square rectangular pipe was recognized as Jiangsu.