QUANGE GUANYE
Blog
15
2025
-
07
Demand for steel pipes in the oil and gas transportation sector is climbing, with performance upgrades becoming key.
With the increasing intensity of domestic oil and gas exploration and development and the advancement of cross-regional pipeline construction, the market demand for steel pipes used in oil and gas transportation has shown a steady growth trend. According to industry statistics, the procurement volume of steel pipes for oil and gas use in the first half of 2024 increased by 12% year-on-year, with high-pressure and corrosion-resistant steel pipes becoming the focus of procurement, reflecting the industry's continuously improving requirements for product performance.
With the increasing intensity of domestic oil and gas exploration and development and the advancement of cross-regional pipeline network construction, the market demand for steel pipes used in oil and gas transportation has shown a steady growth trend. According to industry statistics, the procurement volume of steel pipes for oil and gas use in the first half of 2024 increased by 12% year-on-year, with high-pressure and corrosion-resistant steel pipes becoming the focus of procurement, reflecting the industry's continuously improving requirements for product performance.
The characteristics of such steel pipes are mainly reflected in their pressure resistance and corrosion resistance. For the high-pressure environment of oil and gas transportation, pipeline steel pipes use micro-alloying technology. By adding elements such as niobium and titanium to refine the grains, the yield strength reaches 485 MPa or more, and the yield-strength ratio is controlled below 0.85, ensuring that the pipeline has sufficient plastic reserve when withstanding internal pressure. In terms of corrosion resistance, the inner and outer walls of the steel pipe adopt multi-layer protective technology: the inner wall forms a smooth coating through epoxy powder spraying, reducing medium friction and corrosion; the outer wall uses a three-layer structure of fused epoxy powder + adhesive + polyethylene (3PE), improving soil corrosion resistance, and the service life in buried environments can reach more than 30 years.
Compared with other transportation materials, steel pipes have significant advantages in the oil and gas field. First, they have good rigidity and can withstand deformation caused by geological subsidence. When crossing rivers, mountains, and other complex terrains, the pipeline stability is superior to plastic pipes. Second, the welded connection method of steel pipes can achieve full-penetration joints, and the airtightness reaches no leakage for 30 minutes under 0.1 MPa pressure, meeting the safe transportation requirements of flammable and explosive media. In addition, steel pipes have strong repairability, and local damage can be repaired through welding and casing reinforcement, reducing the cost and time of overall replacement.
In practical applications, the X80 grade straight-seam submerged arc welded pipe used in the West-East Gas Pipeline Project has a single pipe length of 12 meters and a diameter of 1219 mm, capable of achieving an annual gas transmission volume of more than 30 billion cubic meters. In the shale gas extraction field, high-strength seamless steel pipes are used as wellhead casings, capable of withstanding wellhead pressure of 70 MPa and resisting corrosion from sulfur-containing formations. Offshore oil and gas platforms use seawater corrosion-resistant super duplex stainless steel pipes, with chromium, nickel, and molybdenum alloy content exceeding 25%, and pitting corrosion resistance in salt spray environments is more than 5 times that of ordinary steel pipes.
Industry experts point out that in the future, steel pipes for oil and gas will develop towards higher steel grades (X100, X120), larger diameters (1422 mm and above), and will also need to overcome technical difficulties such as low-temperature toughness and welding performance to adapt to the exploration and development needs of extreme environments such as deep sea and polar regions.
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