Abstract A boiler tube experienced a burst. The failed tube was analyzed using metallographic microscopy, direct-reading spectroscopy, and scanning electron microscopy. The analysis revealed that the steel pipe underwent hydrogen-induced corrosion under high temperature and pressure, leading to the formation of extensive...

Technical Standards for Pipeline Steel There are two primary types of straight-seam welded pipes used in high-pressure oil and gas pipelines worldwide: straight-seam submerged arc welded (SAW) pipes (with pipe diameters of 400 to 1400 mm, wall thicknesses of 8 to 40 mm, and the highest grade being X80) and high-frequency...

Pipeline pigging operations are gaining increasing attention. Various technical problems may arise during the pipeline pigging process. During the pre-inspection pigging of a natural gas pipeline, it was discovered that the foam pigging was damaged for unknown reasons. After further diameter measurement pigging, arc...

With the global development of the photovoltaic industry, the construction of upstream polysilicon projects has expanded rapidly. Large-diameter UNS N08810 seamless steel pipes have become the preferred material for polysilicon project construction due to their excellent corrosion resistance. Their production process primarily...

UNS N08810 is a Cr23Ni32-type corrosion-resistant high-carbon alloy with a carbon content of 0.05% to 0.1%. The structure of UNS N08810 under high-temperature solid solution conditions is austenitic, but when heated at medium temperatures of 500 to 900°C, this alloy may enter the γ+σ phase region. Long-term...

A welded neck flange is a type of flange used in piping systems to provide a secure, reliable connection between pipes, valves, pumps, and other equipment. It is designed with a long, tapered hub that is welded to the pipe. This design provides reinforcement in the flange area, reducing stress and ensuring a high-strength...

Flanges are essential components in the design and construction of pressure vessels. They connect pipes, valves, and other equipment to the vessel, ensuring a secure and leak-proof seal. Flanges play a crucial role in maintaining the structural integrity and safety of pressure vessels.   Types of pressure vessel...

The cost of oil and gas pipelines is very high and the distance they cover is long. The terrain along the way is complex, especially in densely populated areas. Once an accident occurs, it will not only cause significant economic losses but also result in great casualties...

Welded steel pipes for oil and gas transportation refer to welded steel pipes used for transporting oil, natural gas, and their products. This type of steel pipe is formed by rolling steel plates or steel strips into a tube through a welding process. Welded steel pipes are mainly divided into straight...

Boiler tubes are a critical component of any boiler system, responsible for carrying hot gases and steam throughout the unit. These tubes play a crucial role in ensuring the efficiency and safety of the boiler, making them an essential investment for any industrial or commercial facility. By choosing high-quality...