LSAW Steel Pipes that meet API 5L standards have the following characteristics:

1. High weld quality

Advanced welding technology: The process of pre-welding followed by fine welding is adopted. Pre-welding is first performed to determine the basic shape and position of the weld, and then fine welding is performed to make the weld forming and quality more stable and reliable.

Good weld performance: The weld has good toughness, plasticity, uniformity and density, can withstand greater external forces and pressures, and reduce the possibility of cracking, leakage and other problems at the weld.

Low defect probability: Compared with non-straight welded pipes, the weld is short and the probability of welding defects is low.

Easy to detect defects: It is easy to realize non-destructive testing during the production process and non-destructive testing review in the field during use, which can timely detect defects and problems inside the weld to ensure the safe operation of the pipeline.

2. High dimensional accuracy

Wide diameter range: The product specification range is large, and the diameter can usually reach φ406.4-φ1422.4mm. It can produce both small diameter and large wall thickness steel pipes and large diameter and large wall thickness steel pipes, which can meet the pipe diameter requirements of different projects.

Accurate wall thickness: The wall thickness range is wide, such as 6.4-26.4mm in X70 steel grade, and the tolerance control of wall thickness is relatively strict, which can ensure the uniformity and stability of the steel pipe under pressure.

Length standard: The length is generally 3-12.5m. The overall mechanical expansion treatment makes the steel pipe dimensional accuracy high and the pipe body shape regular, which is convenient for on-site welding construction.

3. Excellent mechanical properties

High strength: According to API 5L standard, materials of different steel grades can be selected, such as X52, X60, X70, etc., with high yield strength and tensile strength, and can withstand high pressure during oil and gas transportation.

Stress corrosion resistance: After the overall mechanical expansion treatment, the internal stress of the steel pipe is small and evenly distributed, which can effectively prevent stress corrosion cracking and increase the service life of the steel pipe in complex environments.

Good toughness: Both the weld and the pipe body have good toughness. In harsh environments such as high-cold areas, they can resist impact and vibration and are not prone to brittle fracture.

4. High production efficiency

High degree of automation: The welding process can be automated, reducing manual intervention, improving production efficiency and product quality stability.

High current welding: Submerged arc welding can use high current for welding, with fast welding speed, and can complete a large amount of welding work in a short time.

5. Wide range of applications

Diverse transportation media: Suitable for transporting a variety of media such as oil, natural gas, water, coal slurry, ore slurry, etc.

Rich application scenarios: It can be used for land and marine oil and gas transportation, and can also be used in offshore platforms, power stations, chemical industry and urban building structures.