Comprehensive analysis of API 5L X60N seamless steel tube

1. Standards and definitions

API 5L X60N seamless steel tube belongs to the PSL2 level products in API SPEC 5L standard, where "X60" represents the yield strength grade (minimum yield strength 415MPa, corresponding to L415 identification), and "N" represents the chemical composition and mechanical properties that meet the higher requirements of PSL2.

2. Purpose

Mainly used for long-distance pipelines of oil and natural gas, transporting media such as gas, water, and oil.

Suitable for high pressure, corrosive environments, and harsh working conditions.

3. Key performance parameters

Chemical composition and mechanical properties:

Yield strength: 415-565MPa

Tensile strength: 520-760MPa 27

The production adopts microalloying heating treatment process to ensure high strength and toughness.

Size specifications:

Outer diameter range: 21mm~1200mm

Wall thickness range: 2mm~200mm

Tolerance requirement: When the outer diameter is ≥ 60mm and ≤ 426mm, the tolerance is ± 0.75%; When the outer diameter is greater than 426mm, the tolerance is ± 1.0%.

4. Additional technical requirements

Surface treatment: 3LPE anti-corrosion coating or galvanizing treatment can be applied to enhance corrosion resistance.

Inspection standard: Surface inspection is required before leaving the factory.

5. Production and Certification

It needs to meet the API 5L 46th edition specification and can be customized with different connection methods and length measurements.

Note: The above information integrates API standard requirements, supplier parameters, and industry application scenarios. Specific procurement needs to be based on the latest technical agreements and contract terms.