large-diameter heavy-wall spiral steel pipe is manufactured by spiral forming of hot-rolled steel strip followed by double-sided submerged arc welding (SSAW). It is engineered for high-pressure transmission, long-distance pipelines, heavy-load foundations, and large-scale infrastructure projects.
The pipe features high dimensional stability, uniform wall thickness, excellent hoop strength, and reliable weld integrity, making it suitable for oil & gas, water conveyance, thermal networks, piling, and structural applications.
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