Large spiral steel pipe is a kind of pipe used to transport fluid media, which is usually made of steel strip crimped and welded. Its outer surface is spiral-shaped, so it is called spiral steel pipe. Large spiral steel pipes are widely used in oil, natural gas, chemical industry, hydropower and other fields.
The production process of large spiral steel pipe includes the following steps: first, the steel strip is fed into the forming machine, and after a series of bending and curling actions, the spiral-shaped tube blank is formed;Then, the tube blank is fed into the welding machine, and the welding of the steel pipe is completed after high-frequency welding treatmentFinally, the welded steel pipe is subject to visual inspection, non-destructive testing and other quality inspections to ensure that it meets the relevant standards.
The large spiral steel pipe is characterized by its spiral-shaped outer surface, which makes the fluid flow of the pipeline better and the transportation efficiency higher. At the same time, due to its high-frequency welding process, the weld is smoother and smoother, and the quality and durability of the pipeline are improved.
When selecting and using large spiral steel pipes, it is necessary to consider their materials, specifications, pressure levels and other factors. Different materials and specifications are suitable for different fluid media and operating conditions. For example, the spiral steel pipe made of Q235B is suitable for the transportation of low-pressure fluid media such as water and steam, while the spiral steel pipe made of X70 material is suitable for the transportation of high-pressure fluid media such as oil and natural gas. Spiral steel pipe manufacturer