2025-04-17 Welded steel pipes, also known as welded pipes, are steel pipes made by welding steel plates or steel strips after curling and forming. The production process of welded steel pipes is simple, the production efficiency is high, the varieties and specifications are many, and the equipment investment i
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2025-04-16 First, detection methods for oil casing1. Ultrasonic detection: When ultrasonic waves are propagated in the material being tested, the acoustic characteristics of the material and the changes in the internal structure have a certain impact on the propagation of ultrasonic waves. By detecting the deg
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2025-04-15 Thick-walled welded pipes are a kind of precipitation-strengthened nickel-based high-temperature alloy that is difficult to deform. They are similar in composition to the former Soviet Union's ЭИ929 alloy and have high levels of solid solution strengthening of alloy elements and precipitation streng
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2025-04-14 At present, the more commonly used steel pipes are anti-corrosion steel pipes. There are mainly 3PE anti-corrosion steel pipes, TEPE anti-corrosion steel pipes, epoxy resin anti-corrosion steel pipes, etc. So, what should be paid attention to during the construction of anti-corrosion steel pipes?1.
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2025-04-11 Large-diameter plastic-coated steel pipes are mainly made of spiral steel pipes or seamless steel pipes as the base material. It is not recommended to use straight-seam welded pipes. Straight-seam welded pipes are usually not as good as spiral steel pipes in terms of pressure bearing, and the cost i
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2025-04-10 In modern industrial production, hot-dip galvanized steel coils have become an indispensable material in many fields due to their excellent corrosion resistance and processing performance. However, different application scenarios have different requirements for the surface treatment of hot-dip galva
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2025-04-09 The direct harm of incomplete penetration during steel pipe welding to the welded structure is to reduce the load-bearing cross-sectional area and reduce the mechanical properties of the welded joint. The stress concentration caused by incomplete penetration is far more harmful than the reduction in
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2025-04-08 High carbon steel refers to carbon steel with w(C) higher than 0.6%. It has a greater tendency to harden than medium carbon steel and forms high carbon martensite, which is more sensitive to the formation of cold cracks. At the same time, the martensite structure formed in the heat-affected zone of
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