Corrosion has long been a hazard in the petrochemical industry. A slight negligence can damage equipment at best, or even cause accidents or disasters at worst. According to statistics, approximately 60% of damage to petrochemical equipment is caused by corrosion. Therefore, scientific considerations are paramount when selecting petrochemical equipment and materials. The following discusses key
Cryogenic treatment of metals significantly reduces wear and corrosion in marine components, resulting in reduced maintenance, reduced replacement costs, and extended service life. However, this technology has been slow to develop since World War II and has only recently become an effective means of improving the wear and corrosion resistance of heat-treated components. This article
The pipe body material of oil drill pipe is generally low-carbon chromium-molybdenum alloy steel. During drilling operations, the drill pipe is often subjected to complex loads such as tension, bending, torsion, impact, and collision. The service environment is very harsh, which requires the drill pipe to have high strength and high impact toughness. If the
The primary benefit of a double centralizer is stabilizing the azimuth. In practice, we've found that in most cases, dual centralizers stabilize and slightly increase azimuth. Some drill string configurations often exhibit a strong azimuth increase, but proper use prevents azimuth loss. Therefore, dual centralizers should always be used when the azimuth is just right
Pipelines are essential for transporting oil, natural gas, and even solid materials like coal over long distances. As global energy demands grow, high-pressure, long-distance transmission pipelines have become vital for large-scale natural gas delivery. This has driven the rapid development of high-grade pipeline steels. In harsh environments, traditional welded pipes often fall short, making
T/P91 alloy steel is widely used in high-temperature and high-pressure piping systems, especially in power and petrochemical industries. While its welding and heat treatment processes are well-documented, there remains some confusion and inconsistency in practical applications, particularly regarding the selection of post-weld heat treatment (PWHT) temperatures and durations. This article offers a practical perspective
Oil and natural gas are vital national strategic resources. As exploration and production shift toward deepwater offshore fields, deep terrestrial formations, and unconventional resources, the demand for high-performance materials, particularly high-end specialty steels, has increased significantly. These demanding environments require steel materials with exceptional strength, corrosion resistance, and reliability. To address this rising demand,
Ultra Alloy 825: The Optimal Choice for Oil and Gas IndustryOur customers in the oil and gas industry are increasingly turning to Ultra Alloy 825 according to our Ultra Alloy 825 product manual, as it demonstrates exceptional performance in demanding operating environments, particularly in "sour" sulfur-containing environments.Ultra Alloy 825 is a titanium-stabilized nickel-based alloy with
China's Pressure Vessel Materials Reach World-Class Standards: Comprehensive Development from 2000-2020The rapid development of petrochemical and coal chemical industries from 2000 to 2020 has driven pressure vessel products toward larger scale and higher parameter specifications. This period has witnessed remarkable achievements in the research, development, and application of high-temperature, high-pressure, and corrosion-resistant materials. Key domestic
Keywords: SAWH pipe, steel strip, single pass, single-side submerged arc welding double-side formation In spiral welded pipe production, steel strip butt joints typically require front-side submerged arc welding at the butt joint position, followed by root cleaning and back-side submerged arc welding after pipe formation. To eliminate the back-side welding process and improve efficiency,