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Spiral welded pipes are used in China's oil and natural gas transmission pipelines due to the lack of hot-rolled broadband steel in the last century. Our steel pipe machine company offers types of spiral pipe making machine for sale. Therefore, spiral welded pipes have the advantage of being able to apply narrow strip steel, mainly in the following four aspects:
1. The diameter of the steel pipe and the width of the strip are no longer constrained by the ratio of "π".
2. Spiral welded pipes can theoretically help with crack arrest performance during gas transmission.
3. The diameter can reach over 4000 mm and is suitable for various main and trunk lines.
4. The forming equipment is relatively simple, and there is less investment in infrastructure.
The design of spiral welded pipes in urban water supply and drainage pipelines meets the requirements of regional and urban overall planning, and fully considers the scalability of the system. The convenience of water system maintenance and repair was also considered in the design, and the pipeline should be as short and efficient as possible. Spiral welded pipe is a steel pipe formed by coiling strip steel, with double-sided submerged arc welding used for both internal and external joints. It can be used in industries such as water, electricity, and chemical engineering. As long as the forming data is modified, various caliber steel pipes can be produced with the same width of strip steel, which is easy to adjust. As it is formed through continuous twists and turns, the length of spiral welded pipes is not limited and can be set arbitrarily, suitable for large and small batch production.
Piling steel pipes are widely used, and offshore deepwater dock projects have also been extensively constructed along the coast of China. As the main bearing capacity of deep-water docks, pile foundations generally use spiral welded pipe production line to make spiral welded large-diameter steel pipe piles, and pile pipes are also required for bridge, road, and high-rise buildings. According to engineering requirements, the diameter, wall thickness, and length of spiral pipe piles can be adjusted at any time. The wall thickness of the spiral pipe pile is uniform, and the pressure is also uniform. The spiral weld seam is not easy to crack when driven downwards under strong pressure, so it compensates for the shortcomings of cement pile fracture in the past and is favored by many large projects.
