Are spiral welded steel pipes thinner than straight seam welded steel pipes

Before discussing the thickness of spiral welded steel pipes and straight seam welded steel pipes, we first need to understand the definitions and characteristics of these two types of pipes. Spiral welded steel pipes are steel pipes made from spiral steel strips, typically used for transporting liquids, gases, and solid particles. Straight seam welded steel pipes, on the other hand, are steel pipes made from hot-rolled or cold-rolled steel plates through welding, commonly used in construction, machinery, and chemical industries.

So, are spiral welded steel pipes thinner than straight seam welded steel pipes? The answer is not necessarily. The thickness of spiral welded steel pipes and straight seam welded steel pipes depends on the processes and requirements used in their manufacturing. Therefore, it cannot be generally stated that spiral welded steel pipes are thinner than straight seam welded steel pipes. During the normal steel pipe manufacturing process, the initial thickness of the standard thickness steel plate changes after stretching and shaping in the spiral welded steel pipe manufacturing process; the thinner thickness is a result of this normal morphological change.

However, if the buyer’s project requires a specific thickness for the spiral welded steel pipe after standard manufacturing, then this is not necessarily the case:
(1) The manufacturing process of spiral welded steel pipes is relatively complex, requiring processes such as rolling, welding, and surface treatment of the spiral steel strip. During this process, the thickness of the spiral welded steel pipe can be adjusted according to requirements. Generally, the thickness of spiral welded steel pipes can reach or even exceed that of straight seam welded steel pipes, depending on the required steel pipe strength and the usage environment.
(2) The manufacturing process of straight seam welded steel pipes is relatively simple, requiring only the welding of steel plates. Due to the simplified manufacturing process, the thickness of straight seam welded steel pipes is often relatively thin. However, this does not mean that the thickness of straight seam welded steel pipes is necessarily thinner than that of spiral welded steel pipes. In certain special cases, straight seam welded steel pipes can also be manufactured to a very thick thickness.

(3) In addition to the different manufacturing processes, the applications and characteristics of spiral welded steel pipes and straight seam welded steel pipes also affect the choice of their thickness. Spiral welded steel pipes are typically used for transporting large flow rates of liquids, gases, and solid particles, thus requiring high strength and pressure resistance.

In contrast, straight seam welded steel pipes are commonly used in the construction and machinery fields, where the strength requirements for the steel pipe are relatively lower. In conclusion, whether the thickness of spiral welded steel pipe is thinner than that of straight seam welded steel pipe depends on the specific manufacturing process and application requirements. It cannot be simply assumed that spiral welded steel pipe is always thinner than straight seam welded steel pipe. When selecting steel pipes, various factors should be comprehensively considered based on actual needs and the usage environment to ensure the reliability and safety of the steel pipes.