Advantages of welded steel pipe piles

Steel pipe piles are foundation piles used to support large structures such as buildings, bridges, and docks. They are usually used to transfer building loads to stable soil or rocks. The use of steel pipe piles can ensure the safety and stability of buildings, especially when the foundation is complex or the load-bearing requirements are high. The selection of steel pipe piles usually involves multiple factors, including soil conditions, design requirements, construction methods, and costs.

Compared with seamless steel pipe piles, the manufacturing process of welded steel pipe piles is relatively simple and diverse. Welded steel pipe piles are usually welded into cylindrical pipe bodies by electric resistance welding (ERW) or submerged arc welding (SAW). The manufacturing process of welded steel pipe piles involves bending the steel plate into a tubular shape and welding along the joints. According to different welding methods, welded steel pipe piles can be divided into straight seam welded steel pipes and spiral seam welded steel pipes.

Production of steel pipe piles The pipe material of steel pipe piles is generally ordinary carbon steel, with a pile tensile strength of 402MP'a and a yield strength of 235.2MPa, or selected according to design requirements. All materials must meet the design requirements and have a factory certificate and test report. On-site production of steel piles should have a flat site and wind and rain protection measures. Steel pipe piles can be divided into seamless steel pipe piles and welded steel pipe piles according to the production method. Seamless steel pipe piles are rarely used because of their high cost. Welded steel pipe piles are made by rolling steel plates into cylindrical shapes and welding. The production process is relatively simple, and the diameter and wall thickness can be selected at will. Compared with seamless steel pipes, the cost is lower, so it is the most commonly used type of steel pipe piles. Electric welding is mostly used for welding steel pipe piles. According to the processing technology, there are two types of spiral seam welded steel pipes and LSAW steel pipes. Since spiral seam steel pipes have greater rigidity, they are more commonly used in engineering.

With SSAW steel pipe, the length of the pile pipe is not limited, and steel pipe piles of any length can be obtained. Even if the steel strip of the same width is used, as long as the angle of the spiral roll is adjusted, steel pipe piles of any outer diameter can be made. Because the pre-forming process is performed at both ends of the strip steel, the dimensional accuracy, straight angle and true roundness can be higher. This method can produce large-diameter pipes with an outer diameter of 2500mm and a plate thickness of 25mm.

The flat rolled steel pipe is slightly inferior to the spiral welded pipe in terms of production accuracy and production volume. When the number of steel pipe piles in the project is small and the production requirements are not very high, this method can be used to make them on the construction site or in a simple house. The production process is: steel plate trimming → leveling → rolled pipe section → pipe section welding → pipe end groove processing → pipe section splicing and forming → welding quality inspection → appearance finishing and delivery. By adjusting the relevant positions of the rollers, the thickness of the pile pipe diameter can be unrestricted.

Strong manufacturing flexibility: The manufacturing process of welded steel pipe piles is flexible, and steel pipe piles of different diameters, wall thicknesses and lengths can be customized according to engineering requirements. In particular, when the spiral seam welding process is used, steel pipe piles of any outer diameter can be manufactured by adjusting the rolling angle to meet various engineering requirements.

Significant cost advantage: Compared with seamless steel pipe piles, welded steel pipe piles have lower production costs, and due to their relatively simple manufacturing process, they can be mass-produced, thereby reducing unit costs. This makes welded steel pipe piles more attractive in projects with limited budgets.

Material diversity: Welded steel pipe piles can be made of a variety of materials, such as ordinary carbon steel or special steel selected according to design requirements. This diversity enables welded steel pipe piles to adapt to different environmental conditions and engineering requirements, providing higher durability and corrosion resistance.

Wide application scenarios: Welded steel pipe piles are widely used in various infrastructure projects due to their excellent performance, such as building foundations, bridge pile foundations, marine engineering, and wharf construction. Especially in situations where large-diameter, thick-walled steel pipe piles are required, welded steel pipe piles can provide excellent support capacity and structural stability.

Welded steel pipe piles play an important role in engineering construction due to their flexibility in manufacturing process, cost advantages and excellent performance. Whether in bridge foundations, building supports or marine engineering, welded steel pipe piles can provide a solid foundation for the project and ensure the stability and safety of the structure. When choosing steel pipe piles, welded steel pipe piles are undoubtedly a high-quality option worth considering, which will ensure the successful implementation of various engineering projects.