In the fields of oil and gas transportation, water supply pipelines, and structural pile foundations, spiral welded pipes have an irreplaceable position due to their outstanding strength and economy. For the purchasers of engineering projects, the terms "Spirally Welded Tube API 5L" and "Helical Seam Pipe API 5L" often appear interchangeably. So, what is the relationship between the two, and how should their technical connotations be understood?
In fact, API 5L for Spirally Welded Tube and API 5L for Helical Seam Pipe describe two different naming perspectives of the same product. The former emphasizes the "spiral welding" forming process, while the latter highlights the structural feature of "spiral seams". Both refer to high-strength steel pipes made from steel strips or rolls, which are bent and rolled into a circle, and then fused together at the seams through processes such as submerged arc welding. Different welding methods - especially the double-sided submerged arc welding process - ensure the strength and durability of the pipe body under high-pressure transportation conditions.
Spiral welded pipes that comply with API 5L standards have the advantage of being able to flexibly produce large-diameter specifications, and the length of each pipe can be customized according to project requirements. This significantly reduces the number of on-site welding joints and improves the efficiency of pipeline laying. Whether it is Spirally Welded Tube API 5L or Helical Seam Pipe API 5L, their core value lies in providing a safe, economical, and reliable solution for long-distance transportation pipelines.
Cangzhou Spiral Steel Pipe Group Co., Ltd. is a leading manufacturer in the field of spiral steel pipes and pipe coating for corrosion protection in China. The factory is located in Cangzhou City, Hebei Province. Since its establishment in 1993, the company has expanded its area to 350,000 square meters, with a total asset of 680 million yuan and 680 employees. The group produces 400,000 tons of spiral steel pipes annually, with an annual output value of 1.8 billion yuan. Its products are widely used in major energy infrastructure projects both at home and abroad.
Choosing Cangzhou Spiral Steel Pipe Group means choosing a technical foundation of over 30 years dedicated to quality. If you would like to know more about the specification parameters of Spirally Welded Tube API 5L and Helical Seam Pipe API 5L, please feel free to inquire at any time.
Post time: Apr-10-2026