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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,
Abstract The repair welding process for small-diameter spiral welded steel pipes has long been constrained by spatial limitations. Due to the small diameter, workers cannot use electrode arc welding to repair inner weld defects, making welding quality a bottleneck restricting enterprise development. To ensure product quality, the company employs TIG welding repair technology for
Introduction With the rapid development of hydrogen energy infrastructure, the demand for large-diameter high-pressure storage cylinders continues to grow. AISI 4147 steel has emerged as an ideal material for manufacturing these critical components. This comprehensive analysis explores the impact of different quenching media on AISI 4147 steel properties. Industry Background and Significance Market Trends
Natural gas plays an increasingly important role in economic development as a cleaner energy source. Over the years, China has constructed several large-diameter natural gas pipelines, utilizing X80-grade steel pipes, such as the second and third generations of large-diameter pipelines. However, the construction of long-distance pipelines often faces challenging geological and climatic conditions, imposing
Background A significant tubing failure occurred in an ultra-deep well, with measured depths of 8,483.7 m and vertical depths of 8,228 m. The failures were observed in the 5th tubing and the 236th tubing, with specifications of Φ88.9 mm × 9.52 mm 110S and Φ88.9 mm × 6.45 mm 110S, respectively. Tubing 1–5: Slight
Introduction In the demanding field of petroleum equipment manufacturing, selecting the right material is crucial for ensuring the reliability and longevity of the machinery. AISI 4340 alloy steel bar has emerged as a top choice for many manufacturers due to its exceptional mechanical properties. This high-strength, low-alloy steel is renowned for its toughness, fatigue
Introduction: In the demanding world of rock drilling, material selection plays a crucial role in determining operational success and equipment longevity. Sanbar 61 Hollow Drill Steel has emerged as a leading choice among drilling equipment manufacturers, offering an optimal combination of strength, durability, and performance. This specialized steel grade, specifically engineered for rock drilling
Analysis and Application of Welding Technology for 4130 (30CrMo) + 16Mn Abstract: The author analyzes and introduces the welding technology of 4130 (30CrMo) + 16Mn for reference. Keywords: Welding technology; Experiment; Application Introduction From June 12 to August 15, 2010, Xinjiang Tuha Oilfield Construction Co., Ltd. undertook the Yudong Gas Injection Improvement Project for
Experimental Study on the Variation Law of Stress Corrosion Threshold Value of 4130X Steel Project Background This project originates from a sub-project (2016YFC0801905) of the National Key Research and Development Program during China's 13th Five-Year Plan titled "Predictive Life and Extension Key Technologies for Over-Serviced Pressure Equipment." It focuses on researching the life prediction