API 5l X52 PSL2 specification

API 5L X52 PSL2 is a specification for seamless and welded steel line pipe. Here are the key specifications for API 5L X52 PSL2:

Chemical Composition

Carbon (C): ≤ 0.24%

Manganese (Mn): ≤ 1.40%

Phosphorus (P): ≤ 0.025%

Sulfur (S): ≤ 0.015%

Silicon (Si): ≤ 0.45%

Niobium (Nb), Vanadium (V), Titanium (Ti): ≤ 0.10%

Other elements: ≤ 0.50% (each), ≤ 1.00% (total)

Mechanical Properties

Yield Strength (min): 360 MPa (52,200 psi)

Tensile Strength (min): 460 MPa (66,700 psi)

Elongation (min. %): 21

Additional Testing Requirements

Non-Destructive Testing (NDT): Mandatory ultrasonic inspection of the full body of the pipe and the weld seam.

Impact Testing: Charpy V-notch impact testing at specified temperatures for both pipe body and weld seam.

Manufacturing Process

Method: Seamless or welded (ERW, SAW, HFW, or others).

Heat Treatment: Normalizing, quenching and tempering, or other heat treatment as agreed upon.

Application

API 5L X52 PSL2 pipes are used for conveying gas, water, and oil in the natural gas and petroleum industries. PSL2 ensures stricter quality control and testing compared to PSL1, making it suitable for pipelines operating in harsh and critical conditions where reliability and performance are essential.

Compliance

Certification: Each pipe is supplied with a mill test certificate conforming to EN 10204 Type 3.1 or 3.2.

Additional Requirements: Depending on the application and customer requirements, additional supplementary requirements may be specified.

API 5L X52 PSL2 is a widely used specification for line pipes due to its excellent mechanical properties and suitability for demanding environments in the oil and gas industry.

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