High Pressure Oil Pipeline Steel Pipe

High Pressure Oil Pipeline Steel Pipe serves as a core component of petroleum energy transportation systems, specially designed for long-distance and high-pressure working conditions. It is widely used in onshore crude oil pipe networks, refined oil branch lines and offshore gathering pipelines, ensuring stable and safe transportation of energy media.

The product is made of high-quality low-carbon alloy steel with precise control of carbon, silicon and manganese content, strengthened by micro alloys such as niobium, vanadium and titanium. Strict refining processes reduce harmful impurities like sulfur and phosphorus to ensure material purity. It is manufactured via hot-rolled seamless forming or precision submerged arc welding. Seamless pipes are produced by piercing and rolling solid steel billets, featuring no weld defects and uniform stress distribution; welded pipes adopt precise forming and double-sided welding technology to guarantee weld strength consistent with the base metal. The product strictly complies with international and domestic standards including API 5L and GB/T 9711, covering steel grades from Gr.B to X80. It meets standards for yield strength, tensile strength and low-temperature toughness, with excellent fatigue resistance and hydrogen-induced cracking resistance.

Specifications cover outer diameters from 21.3mm to 1220mm, wall thicknesses from 3mm to 50mm, with customizable lengths to adapt to different pipeline design requirements. The pipe body undergoes internal and external anti-corrosion treatment, resisting soil corrosion, sulfur-containing crude oil erosion and temperature fluctuations, maintaining stable service in complex geological and climatic conditions such as deserts, coastal areas and cold regions. The product undergoes multi-stage quality control including non-destructive testing, hydrostatic testing, tensile and impact tests, with no leakage or cracking risks, meeting stringent safety and durability standards in the petroleum industry, making it a reliable choice for high-pressure oil transportation projects.