The development history of Panzhihua Iron and Steel Co., Ltd.

panzhihua iron and steel

Panzhihua Iron and Steel Vanadium Rail and Beam Factory are located in Nongnongping, Panzhihua City, Sichuan Province. It was completed and put into operation in 1974.

Panzhihua Iron & Steel has a universal production line with the world’s advanced production technology and equipment, with an annual output of 1.6 million tons of steel rails; using the world’s most advanced seven-stand universal rolling process, it is equipped with completely independent intellectual property rights. m in-line heat-treated rail lines. At present, intelligent production has been realized, and one rail can be produced every 2 minutes.

Panzhihua Iron and Steel Co., Ltd. has the ability to deliver any size of 9-100m. The varieties and specifications of the rails are complete, the specifications cover 37-75kg/m, the tensile strength has achieved full coverage of 800-1350MPa, and the tread hardness has achieved full coverage of 235-410HB. It has formed a series of railway steels for high-speed railways, heavy-haul railways, passenger and freight mixed transportation, urban rail transit, etc. Panzhihua Iron and Steel Co., Ltd. can produce the world’s highest requirements and strictest standard series of steel rail products and has created and applied for more than 60 steel rail patent technologies. A number of technologies have been authorized by the United States and the European Union, and the products are exported to more than 30 countries and regions in North America, South America, Europe, Asia Pacific, etc., accounting for more than 70% of the domestic export share.

The 100-meter steel rail is the flagship product of Panzhihua Iron and Steel Co., Ltd. Panzhihua Iron and Steel Co., Ltd. has the world-famous vanadium-titanium magnetite, and the vanadium-containing steel rail has flexibility and wears resistance that surpasses ordinary steel rails. condition.

Panzhihua Iron & Steel has first-class equipment, first-class technology, and first-class quality. It is a veritable world rail giant.

Development milestones of Panzhihua Iron and Steel Co., Ltd.:

1. In 1975, the first rail in Southwest China rolled off the assembly line in Panzhihua Iron & Steel Co., Ltd. It became the “darling of the times” because of its unique flexibility and wear resistance.

2. In 1984, the Daqin Railway, the largest dedicated coal transportation line in China, was ready to start construction, but the 75kg/m heavy rail that needed to be laid was only produced in two countries at that time. Because the other party’s asking price was too high, the Daqin Railway was stranded, and the former Ministry of Railways set its sights on Panzhihua Iron and Steel. Panzhihua Iron and Steel Co., Ltd. boldly proposed a new process for rolling six rail holes, which has no precedent at home and abroad, thus solving the problem of producing the world’s heaviest rail on an ordinary rail and beam rolling mill. With the large increase in Daqin railway transportation, higher requirements for rail performance have been put forward. Panzhihua Iron and Steel has developed a new rail product with higher strength, better wear resistance, toughness, plasticity, and fatigue performance – a 1300MPa grade PG4 rail. It perfectly solves the upgrading needs of Daqin Railway.

3. Since the first major speed increase of China Railway in 1997, the domestic turnout rails cannot meet the impact and shock caused by the high-speed train operation, so they have to import them from France at a high price of 10,000 yuan/ton. In 1999, Panzhihua Iron and Steel took the lead in developing the first batch of speed-increasing turnout rails 60AT in the country.

4. In 2000, breaking through the technical blockade, Panzhihua Iron and Steel successfully developed and produced the first batch of high-speed rails with a speed of 200 kilometers per hour in China, and laid it on China’s first railway with a speed of 200 kilometers per hour, the Qinshen Passenger Dedicated Line. History of the production of high-speed rails.

5. In 2004, Panzhihua Iron and Steel Co., Ltd. became the first enterprise in China that can produce 100-meter-long fixed-length rails with high strength, high straightness, high surface finish, and high dimensional accuracy in accordance with the European Railway Union (EN) standard;

6. In December 2005, Panzhihua Iron and Steel took the lead in developing and producing 100-meter-long fixed-length high-speed rails with a speed of 350 kilometers per hour in my country, and at the same time developed the 60D40 high-speed switch rails for supporting use;

7. In February 2006, Panzhihua Iron and Steel signed a contract for exporting 57kg/m steel rails with American customers. This is the first time that domestic steel rails have been exported to the US market, marking that the international competitiveness of domestic steel rails has reached a new level.

8. On April 12, 2006, Pansteel’s 4,500-ton PG460kg/m high-strength grade ordinary steel rail and 230-ton PG460kg/m high-strength grade heat-treated steel rail was successfully exported to Brazil. market.

9. On July 1, 2006, the Qinghai-Tibet Railway, which attracted worldwide attention, was officially opened to traffic. About 64% (a total of nearly 70,000 tons) of rails on this longest plateau railway in the world, known as “one of the four major projects in my country’s new century”, are provided by Panzhihua Iron and Steel Group. The Qinghai-Tibet Railway is the world’s highest, The longest railway in the continuous permafrost area with the highest maintenance-free requirements has very high requirements on the strength, hardness, and low-temperature impact resistance of the rails; while the high-quality Panzhihua Steel rails, which have aggregated more than 10 patented technologies, have high strength levels, Excellent comprehensive performance, maintenance-free use or small maintenance, can withstand the severe test of harsh conditions such as high altitude, high cold, and permafrost on the Qinghai-Tibet Plateau.

10. In 2007, Panzhihua Iron and Steel Co., Ltd. exclusively received all orders for the Beijing-Tianjin intercity high-speed railway, the first 350 km/h intercity high-speed railway in China.

11. At the beginning of 2008, the General Administration of Quality Supervision, Inspection, and Quarantine of China granted Panzhihua Iron and Steel the qualification certificate for exporting rail products, which filled the blank of my country’s rail manufacturers’ export exemption.

12. In July 2008, the high-speed rails with a speed of 350 kilometers per hour and 100 meters in length produced by Panzhihua Iron and Steel Co., Ltd. were successfully sent to the laying site of the Wuhan-Guangzhou (Wuhan-Guangzhou) high-speed railway passenger dedicated line. After the first supply.

13. In 2016, Pangang took the lead in revising the international standards for rails on behalf of China.

14. In October 2017, the “Fuxing” EMU of the Beijing-Shanghai high-speed rail line ran at a speed of 350 kilometers per hour, and the “Falcon” train of the Japanese Shinkansen with a speed of more than 320 kilometers per hour was the fastest high-speed rail in the world. On this Beijing-Shanghai line with the fastest commercial operation in the world, Panzhihua Iron and Steel Co., Ltd. is its key supplier of high-speed rails, and Panzhihua Iron and Steel Co., Ltd. exclusively supplies all the sections from Beijing to Tianjin. It is not only the speed that stuns the world with Panzhihua Iron and Steel Rail. In the test, the pen, mobile phone, and an upside-down mineral water bottle were placed on the edge of the window of the “Fuxing” at a speed of 350 kilometers per hour. The small test on the “Fuxing” has verified the good safety, stability, and comfort of the Beijing-Shanghai line, which is also inseparable from the high surface finish, high flatness, and high dimensional accuracy of the Panzhihua Iron and Steel Rail’s excellent quality.

15. In October 2019, the export-type turnout rail independently developed by Panzhihua Iron and Steel was successfully mass-produced in Panzhihua Iron and Steel Vanadium Rail Beam Factory and sent to users, marking that Panzhihua Iron and Steel’s design, development, and manufacturing capabilities in the field of steel rails have stepped up again. A new level. It fills the gap in my country’s export-oriented turnout rails. This turnout rail has always been monopolized by a few foreign companies. The export-type turnout rail independently developed by Panzhihua Iron and Steel has achieved mass production, which not only fills the gap in domestic metallurgical production. Many technical indicators of turnout rails have obvious advantages, and 11 indicators out of 17 indicators such as size and surface quality are better than their international counterparts. Among them, among the 8 data comparisons of specifications and sizes, 7 are dominant, reaching the international leading level. This type of rail was designed and shaped by “modular process design + simulation” and was successfully rolled at one time, creating a record of developing new high-end rail products.

16. On November 28, 2020, the first order of “overall export” of my country’s high-speed rail – was the first batch of steel rails produced by Panzhihua Iron and Steel Co. One of the few countries that can export long-to-length rails.

17. In October 2021, the first batch of 11,000 tons of PG5 rails exported by Pangang will be shipped to Australia. This marks the fifth generation of steel rail products independently developed by Panzhihua Iron and Steel Group – PG5 steel rail, which has successfully entered the international high-end heavy-haul railway market. The comprehensive performance index of Panzhihua Iron and Steel’s rails is comparable to that of world-class brand manufacturers’ rails, which can meet the requirements and conditions of the user’s line use. Panzhihua Iron and Steel’s PG5 rail is currently the highest-strength rail on the global railway line, and its production is also the most difficult.