Difference between LSAW Steel Pipe and HSAW pipes

Steel channels are crucial in different mechanical segments, encouraging the effective transportation of liquids and gasses fundamental for vitality generation, framework improvement, and water administration. Longitudinal Submerged Circular Segment Welded Steel Pipe (LSAW Steel Pipe) and Helical Submerged Arc Welded (HSAW Pipes) channels speak to two unmistakable categories, each recognized by one-of-a-kind fabricating procedures and custom-made applications. Whereas both serve comparative purposes, they have particular contrasts in their fabricating forms, applications, and characteristics. This article will dig into these contrasts to offer assistance you determine which sort of pipe might be best suited for your particular needs.

Manufacturing process:

The manufacturing process is one of the key differences between LSAW and HSAW steel pipes. The LSAW steel pipe is formed by rolling steel plates into a tubular shape and welding them longitudinally. This process can involve either single straight seam welding or double straight seam welding (DSAW). The welding is typically done using the submerged arc welding method, which ensures a high-quality, strong weld.

On the other hand, HSAW steel pipes are manufactured using a spiral welding technique. In this process, strip steel is continuously fed at an angle into a forming machine, which shapes it into a spiral tube. The edges are then welded together, creating a spiral seam along the length of the pipe. This method allows for the production of pipes with various diameters using standard-width steel strips, without the need for cutting or resizing.

Diameter range:

The diameter range is another significant difference between these two types of steel pipes. LSAW steel pipes typically have a diameter range from 16 inches to 60 inches (406mm to 1500mm). This range makes them suitable for many large-scale industrial applications, particularly in the oil and gas sector.

HSAW steel pipes, however, offer a wider range of diameters, spanning from 20 inches to 100 inches (406mm to 2540mm). This broader range provides more flexibility in terms of pipe size selection, making HSAW pipes suitable for a variety of applications, especially in water distribution systems and less critical industrial uses.

Application areas:

Due to their manufacturing process and resulting properties, LSAW and HSAW steel pipes are often used in different application areas. the LSAW steel pipes are frequently chosen for high-pressure, long-distance pipelines, particularly in the oil and natural gas transportation industry. Their high pressure-bearing capacity and excellent low-temperature corrosion resistance make them ideal for these demanding applications.

HSAW steel pipes, while versatile, are more commonly used in less critical applications. They are often preferred for water distribution systems, piling, and structural applications. The longer welds in HSAW pipes may be more susceptible to defects such as cracks, pores, or inclusions, so they are generally not recommended for high-pressure oil and gas pipelines where safety and reliability are paramount.

Quality Control:

Quality control measures for LSAW and HSAW steel pipes also differ. The LSAW steel pipe can be thoroughly inspected using non-destructive testing methods, such as ultrasonic testing and radiographic (X-ray) inspection. These strategies permit for comprehensive quality confirmation without compromising the keenness of the pipe.

While HSAW steel channels can moreover experience non-destructive testing, their winding weld crease can make the review more challenging. In a few cases, damaging testing strategies may be fundamental to guarantee the quality and astuteness of HSAW channels, particularly for more basic applications. This difference in quality control procedures can influence the choice between LSAW and HSAW pipes for specific projects.

Welding Stress and Geometric Accuracy:

The LSAW steel pipe generally exhibits less welding stress concentration compared to HSAW pipes. This is due to the longitudinal nature of the weld in LSAW pipes, which distributes the stress more evenly along the pipe's length. Additionally, LSAW pipes tend to have higher geometric accuracy, which is a crucial factor in terms of installation convenience and overall performance.

HSAW steel pipes, with their spiral weld seam, have a larger heat-affected zone compared to LSAW pipes. This larger heat-affected zone is considered a potential weakness and may serve as a starting point for failure under certain conditions. The spiral weld also introduces more residual stress into the pipe structure, which can affect its long-term performance and durability.

Wholesale LSAW Steel Pipe:

For those in need of LSAW steel pipes, LONGMA GROUP offers a wide range of options. Their LSAW pipes are available in outer diameters ranging from 6" to 80" (168.3mm to 2032mm), with thicknesses from SCH10 to SCH160 (6.35mm to 59.54mm), and lengths from 4m to 18m. LONGMA GROUP also caters to custom orders, allowing customers to specify unique dimensions, material specifications, and coating options to meet their specific project requirements.

If you're in the market for a reliable China LSAW Steel Pipe manufacturer, LONGMA GROUP welcomes inquiries at info@longma-group.com. Their commitment to quality and customization makes them a strong choice for various industrial applications requiring LSAW steel pipes.