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Oil pipeline is a pipeline system specifically designed for long-distance transportation of crude oil or finished oil. Its core component material is spiral steel pipe (also known as spiral welded pipe), which is made by rolling low carbon steel or low alloy steel strip into pipe blanks at a spiral angle, and then welding them using submerged arc welding technology.
keyword Oil transportation long-distance pipeline steel pipe Category Scene photos Related products Get a quoteDefinition and core components of oil transportation pipelines
Oil pipeline is a pipeline system specifically designed for long-distance transportation of crude oil or finished oil. Its core component material is spiral steel pipe (also known as spiral welded pipe), which is made by rolling low carbon steel or low alloy steel strip into pipe blanks at a spiral angle, and then welding them using submerged arc welding technology. The diameter of this type of pipeline is usually ≥ 406mm, which can withstand high pressure (such as 10MPa or above) and adapt to complex terrain.
Technical features and advantages
Manufacturing process
Forming technology: The strip steel is flattened and coiled to form a spiral tube blank, and the diameter accuracy is ensured through external/internal control roller forming technology. The weld seam gap is controlled within 1-3mm.
Welding process: Single or double wire submerged arc welding (such as Lincoln welding machine in the United States) is used, with double-sided welding on the inside and outside to enhance sealing and strength.
Performance advantages
Pressure bearing capacity: Spiral welds disperse stress, with a 30% increase in pressure bearing capacity compared to straight seam pipes, suitable for high-pressure oil transportation.
Material economy: Narrow steel strips can produce large-diameter pipes (such as DN1200), reducing raw material costs by 20%.
Corrosion resistance: Extended service life of 5-10 years through 3PE anti-corrosion coating (epoxy powder+adhesive+polyethylene) or galvanizing treatment.
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