API 5L X52 Seamless Steel Pipe

API 5L Grade X52 pipe is also called L360 pipe. X52 (L360) is named after the minimum yield strength of 52,200 psi (360 Mpa). It is a medium grade in API 5L and ISO 3183 specifications, used for oil and gas pipeline transportation.

What is X52 seamless steel pipe?

X52 Seamless steel pipe is a high-strength, corrosion-resistant, high-pressure resistant pipe widely used in oil, gas and other fields. API 5L X52 pipe includes seamless and welded steel pipes for pipeline transportation systems in the oil and gas industry. API 5L X52 pipe is suitable for transporting natural gas, water and oil. The two digits after "X" indicate the minimum yield strength (unit: 000 psi) for producing this grade of pipe.

Compared with ordinary steel pipes, X52 carbon steel seamless pipe has the following significant advantages:

a. High-quality material: Made of high-quality carbon steel, it has excellent strength and toughness and can withstand working requirements under high-pressure environments.

b. Corrosion resistance: X52 seamless steel pipe has good corrosion resistance after special processing, and can be used for a long time in harsh environment without being easily damaged.

c. Seamless processing: It is made by seamless processing technology, with smooth inner and outer surfaces, no defects such as pores and slag inclusions, ensuring the stability and safety of pipeline fluid transportation.

API 5L X52 Type and Specification:
According to product specification level: PSL1, PSL2, sour service
API 5L X52 PSL1, used for pipelines with common delivery conditions in rolled state.
API 5L X52N/M/Q, used for PSL2 pipelines with delivery conditions of N, M and Q.
API 5L X52NS/MS/QS, used for PSL2 pipelines for sour service.

Suffix letter meaning
R: rolling state
N: normalizing rolling, normalizing forming, normalizing
Q: tempering quenching
M: thermomechanical rolling or thermomechanical forming
S: acid service

Chemical composition:
X52N carbon steel seamless pipe mass fraction, based on smelting analysis and product analysis, maximum %:
Carbon: 0.24,
Silicon: 0.45,
Manganese: 1.40,
Phosphorus: 0.025,
Sulfur: 0.015,
Vanadium: 0.1,
Niobium: 0.05,
Titanium: 0.04.

Mechanical properties of X52 seamless steel pipe:
Yield strength: minimum 360MPa, maximum 530MPa,
Tensile strength: minimum 460MPa, maximum 655MPa, yield ratio maximum 0.93

API 5L X52 Pipe Specification:

API 5L is a specification for steel pipe for oil, gas and petroleum industry pipeline transportation systems. The primary purpose of API 5L is to provide standards for pipe suitable for the transportation of natural gas, oil and water.
API 5L covers both seamless and welded pipe. It includes plain-end, threaded-end and flare-end pipe, as well as through-flow-line (TFL) pipe and pipe with ends prepared for special joints.
The international standard specifies the manufacturing requirements for two product specification levels (PSL 1 and PSL 2) for seamless and welded steel pipes.

Features and advantages of X52 seamless steel pipe:

1. High strength and toughness
X52 seamless steel pipe is made of high-strength steel. After heat treatment, it has high yield strength and tensile strength, and can withstand greater pressure and weight. X52 pipeline pipe also has good toughness, can withstand greater impact and vibration, and is not prone to cracks and breaks.

2. Good corrosion resistance
The surface of X52 seamless steel pipe is treated with professional anti-corrosion coating and has good corrosion resistance. The pipeline pipe can resist corrosion from chemicals such as acid, alkali, and salt, ensuring stable performance during long-term use, and can be used for a long time in harsh environments without damage.

3. High precision
X52 seamless steel pipe adopts advanced seamless rolling technology in the production process, which ensures the precision and wall thickness uniformity of the steel pipe, making the pipeline connection tighter and reducing the risk of leakage.

4. Good weldability
The material of X52 seamless steel pipe has good weldability, which can be easily welded and processed, and adapt to various complex installation requirements.

5. Long life
Due to its excellent corrosion resistance and high strength, the service life of X52 seamless pipeline is very long. Under the correct installation and use conditions, the pipeline can ensure long-term and stable use effect.

Application areas of X52 seamless steel pipe:

1. Oil and gas transportation
X52 seamless steel pipe is an ideal choice for oil and gas transportation. Its high strength and good corrosion resistance can ensure the safe and stable operation of the pipeline.

2. Chemical industry
X52 seamless steel pipe is widely used in the chemical industry to transport various corrosive media, such as acid, alkali, salt, etc., which can meet the high requirements of the chemical industry for pipeline materials.

3. Power industry
X52 seamless steel pipe is used in the power industry to manufacture boilers, superheaters, reheaters, economizers, air preheaters, water walls, condensers, deaerators and other equipment, with good high temperature and pressure resistance.

4. Construction industry
X52 seamless steel pipes are also widely used in the construction industry, such as bridges, high-rise buildings, underground pipelines, etc. Their high strength and good plasticity make steel pipes have broad application prospects in the construction field.

In summary, as an important pipe product in the energy industry, X52 seamless steel pipes have high-quality materials and performance, providing important support for the transportation of oil, natural gas and other fields. In the future, with the continuous advancement of technology and the continuous increase in industry demand, I believe that X52 seamless steel pipes will usher in a more brilliant development prospect and contribute more to the development of my country's energy industry.

Read more: Seamless Steel Pipe Manufacturing Process or API 5L X42 Seamless Steel Pipe