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What are the application scenarios for large-diameter steel pipes?
Large-diameter steel pipes (typically referring to pipes with an outer diameter exceeding 114 millimeters or even 200 millimeters) serve as critical materials in modern industrial and infrastructure development. With their superior load-bearing capacity, high flow rates, impact resistance, and pressure tolerance, they play an irreplaceable role across multiple vital sectors of the national economy.
In energy transportation, large-diameter steel pipes serve as the “aorta” for long-distance oil and gas transmission, extensively deployed in major domestic and international pipeline projects such as the West-East Gas Pipeline. These pipelines predominantly utilize high-strength welded pipes capable of withstanding internal pressures exceeding 10 megapascals while adapting to complex geological and marine environments, ensuring secure and efficient energy delivery.
Municipal and water conservancy projects similarly rely on large-diameter steel pipes. Serving as the backbone of urban water supply and drainage systems, they shoulder critical responsibilities including raw water intake, clean water distribution, and rainwater/sewage discharge. In large-scale water conservancy projects—such as inter-basin water diversion schemes and hydroelectric power stations—these pipes are used to construct water conveyance tunnels, diversion conduits, and spillway pipes. Their exceptional structural strength and watertight integrity ensure reliable project operation.
In industrial manufacturing, large-diameter steel pipes serve industries such as metallurgy, chemical processing, and heavy machinery. For instance, they are used in steel mills to transport high-temperature gas and cooling water, and in chemical plants to convey various corrosive media. Simultaneously, they function as core components in hydraulic systems for large-scale construction machinery and as structural support elements for heavy equipment.
Moreover, large-diameter steel pipes demonstrate formidable structural capabilities in major infrastructure projects. In bridge engineering, they form steel-concrete composite arches enabling large-span structures; in tunnels and rail transit systems, they serve as vital components of ventilation, fire protection, and cable protection systems; while airports and ports utilize them to construct efficient drainage networks and material handling systems.
In summary, from underground utility networks to energy arteries, from industrial cores to trans-river bridges, large-diameter steel pipes permeate numerous critical junctures of national economic development. They stand as essential foundational materials underpinning modern societal progress.
Steel pipe,Large diameter steel pipe,The applications of large diameter steel pipe
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