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Specialty steels form the vital corridors of global energy and material transportation.

2025-02-19


Weather-resistant pipeline steel, through optimized composition design, eliminates the need for coating on the outer surface of the pipeline, reducing ongoing maintenance costs.

In the interconnected global industrial chain and energy network, pipeline transportation, with its advantages of high efficiency, low carbon emissions, and safety, has become a core vehicle for the transport of strategic materials such as oil, gas, and mineral slurries. Specialty steels, with their superior pressure resistance, corrosion resistance, and adaptability, function like the "steel veins" that run through the entire pipeline transportation system. They not only overcome transportation bottlenecks in extreme environments but also drive pipeline projects toward longer distances, higher pressures, and larger diameters, laying a solid foundation for global energy security and material flows.

In the oil and gas pipeline sector, the strength and corrosion resistance of steel directly determine transportation efficiency and safety. The X80/X90 grade pipeline steel used in onshore high-pressure gas pipelines boasts a tensile strength exceeding 620 MPa and can withstand operating pressures exceeding 12 MPa. This supports the West-East Gas Pipeline III, which achieves continuous transmission over 4,800 kilometers and an annual gas transmission capacity of 30 billion cubic meters. The seawater-corrosion-resistant alloy steel pipes used in submarine oil and gas pipelines, by adding elements such as nickel and molybdenum to form a passivation film, control the submarine corrosion rate to below 0.02 mm/year, ensuring stable transportation for deepwater oil and gas field development in the South China Sea.

For the transportation of mineral slurries and chemical media, steel's wear resistance and chemical resistance are core advantages. Bimetallic composite steel pipes used to transport iron ore slurry feature an inner layer made of high-chromium wear-resistant steel with a hardness exceeding HRC60. This increases their service life five times compared to ordinary steel pipes, helping Panzhihua Iron and Steel Group achieve efficient mineral resource transportation. In the chemical industry, 316L stainless steel pipes, with their excellent acid and alkali resistance, can safely transport highly corrosive media such as sulfuric acid and caustic soda, meeting the precise transportation needs of the fine chemical industry.

As pipeline transportation transitions toward greener and more intelligent technologies, steel technology continues to achieve breakthroughs. Weather-resistant pipeline steel, through optimized composition design, eliminates the need for coating on the outer surface of the pipeline, reducing ongoing maintenance costs. Anti-corrosion coated steel for buried pipelines, combined with 3PE anti-corrosion technology, extends pipeline service life to over 50 years. Specialty steel, with its toughness and strength as a "steel vein," connects the global energy and material networks, becoming a key force in promoting the coordinated development of the "dual carbon" goals and the industrial chain.

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