API 5L X60 PSL2 Heavy Wall Linepipe

X60 PSL2 thick-walled pipeline pipe is a high-strength, low-alloy pipeline steel primarily used in long-distance transportation systems in industries such as oil and gas. In its naming convention, "X" stands for pipeline steel. X60 pipeline pipe conforms to API SPEC 5L and GB/T9711 standards, with outer diameters ranging from 8 inches to 1240 mm and wall thicknesses from 5.54 mm to 200 mm, making it suitable for extreme environments such as deep sea and polar regions.

API 5L X60 PSL2 thick-walled conduit has become the first choice for high-strength infrastructure. High-Pressure API 5L X60 PSL2 Heavy Wall Linepipe for Sour Service & Harsh Environments.

Technical Specifications for API 5L X60 PSL2 Line Pipes for oil & gas

API 5L X60 PSL2 Thick-Walled Pipe Dimensions and Weight Specifications (ASME B36.10M Standard)

API 5L X60 PSL2 High Yield Line Pipes Test and inspection

Chemical and Mechanical Testing (API 5L PSL2 Standard):

• Chemical Composition Optimization: Strict control of carbon equivalent (CEq ≤ 0.43) ensures excellent performance for field welding in the high temperature and humidity environment of South America.
• Charpy Impact Testing (CVN): For deep-sea or high-altitude projects in South America, transverse impact testing at 0°C or -10°C is typically required to ensure the fracture toughness of thick-walled pipes.

Specialized Non-Destructive Testing (NDT) for Thick-Walled Pipes:

• 100% Full-Body Ultrasonic Testing (UT): Focuses on detecting internal defects (delamination, porosity) in the thickness direction; this is mandatory for thick-walled pipes.
• Magnetic Particle Testing (MT) or Penetrant Testing (PT): Performs fine crack scanning on bevel ends to prevent weld defects during field welding.

Environmental Simulation Testing (Sour Service):

• HIC & SSCC Testing: For highly corrosive oil and gas fields containing hydrogen sulfide (such as some projects in Colombia or Venezuela).

API 5L X60 PSL2 Pipeline for Oil and Gas Services

• External/Internal Coating:

Short-term Protection: Apply black anti-rust paint or environmentally friendly varnish.

Long-term Protection: 3LPE (triple-layer polyethylene) or 3LPP (triple-layer polypropylene) coatings commonly used in South American projects, and an internal FBE (fusion-bonded epoxy) drag-reducing coating.

• End Protection: Heavy-duty Bevel Protectors: Due to the extreme weight of thick-walled pipes, ordinary plastic caps are easily broken. Steel-plastic composite protectors must be used to ensure that the bevel is not damaged or deformed during lifting and transportation.

API 5L X60 PSL2 pipeline packaging and shipping

Shipping Method Selection:

• Breakbulk: The preferred choice for the vast majority of thick-walled pipelines. Large-scale projects in South America typically involve large volumes, and breakbulk shipping offers lower costs and fewer restrictions on overweight pipes.
• Container: Limited to small batches or short pipes (≤11.8m).
• Flat Rack: For oversized or overweight thick-walled pipes.

Dunnage & Lashing:

• No Metal Contact: Fumigated wood or rubber pads must be used to insulate pipes from the ship's bottom and between pipes to prevent friction corrosion caused by vibration during transport.
• Multi-Layer Stacking Calculation: Due to the extremely high unit pressure of thick-walled pipes, the number of stacking layers must be calculated to prevent the bottom pipes from collapsing or deforming under weight.

Leading Global Supplier of API 5L X60 PSL2 Heavy Wall Linepipe – Exporting Worldwide

API 5L X60 PSL2 Thick-Walled Pipe Cases

1. Acidic Oil and Gas Field Gathering and Transportation

In high-sulfur oil and gas fields with H₂S partial pressure ≥300 Pa, X60 PSL2 thick-walled pipes, after passing HIC/SSC tests, can stably transport sulfur-containing crude oil and natural gas for extended periods. For example, the high-acid section of the West-East Gas Pipeline III project uses X60 PSL2 seamless steel pipes. Through optimized chemical composition (C≤0.12%, S≤0.003%), high-performance indicators such as yield strength of 420 MPa and impact energy ≥120 J at -20℃ are achieved, ensuring a pipeline service life of over 20 years.

2. Deep-Sea High-Pressure Transportation

The quenching and tempering process of X60 PSL2 enables it to withstand hydrostatic pressure exceeding 100 MPa and seawater corrosion, making it widely used in subsea oil pipelines and platform risers. The CNOOC Bohai Oilfield project uses X60 PSL2 seamless pipe, which has passed NACE MR0175 certification and has operated stably for more than 5 years at an H₂S partial pressure of 0.5 kPa and a temperature of -20℃.

3. Chemical and Energy Infrastructure

In chemical reactors, urban gas pipelines, and other applications, X60 PSL2 demonstrates significant advantages in corrosion resistance and high strength. For example, the Northwest Oilfield Shunbei No. 2 Gas Injection Project procured 2,300 tons of X60 PSL2 thick-walled seamless steel pipe for enhanced oil recovery (EOR) projects, and the pipe exhibited excellent stability in sulfur-containing media.

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