API Spec 5L Steel Plate for Pipeline

  • Standard: API Spec 5L
  • Grades: Gr.B/L245-X100/L690
  • Dimension: T 5-350mm × W 910-4100mm × L 3000-25000mm

API Spec 5L Steel Plate for Pipeline

API Spec 5L Steel Plate for Pipeline is a widely recognized standard specification that defines the requirements for manufacturing two product specification levels (PSL 1 and PSL 2) of seamless and welded steel plates used in transporting petroleum and natural gas. This specification covers a range of steel grades from Gr.B/L245 to X100, each designed to meet the rigorous demands of pipeline construction, ensuring strength, toughness, and durability under varying conditions. The steel plates produced under API 5L are subject to stringent chemical composition limits and mechanical property requirements, including yield and tensile strength, elongation, and impact resistance, to guarantee optimal performance in service. With mandatory testing for PSL 2, including Charpy V-notch impact tests, API 5L steel plates are engineered to deliver superior reliability and safety in high-pressure environments, making them an essential component in the global energy infrastructure.

Chemical Composition of API Spec 5L Steel Plate for Pipeline

Grade C max Mn max P max S max Si max Cu max Ni max Cr max Mo max V max Nb max Ti max
Gr.B/L245 0.28 1.20 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X42/L290 0.28 1.30 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X46/L320 0.28 1.40 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X52/L360 0.28 1.40 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X56/L390 0.28 1.40 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X60/L415 0.28 1.40 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X65/L450 0.28 1.45 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X70/L485 0.28 1.65 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X80/L555 0.28 1.85 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04
X100/L690 0.28 2.00 0.030 0.030 0.45 0.50 0.50 0.50 0.15 0.10 0.05 0.04

Mechanical Properties of API Spec 5L Steel Plate for Pipeline

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Impact Energy (Charpy V-notch)
Gr.B/L245 245 415 20 Required for PSL 2
X42/L290 290 415 21 Required for PSL 2
X46/L320 320 435 21 Required for PSL 2
X52/L360 360 460 23 Required for PSL 2
X56/L390 390 490 24 Required for PSL 2
X60/L415 415 520 24 Required for PSL 2
X65/L450 450 535 24 Required for PSL 2
X70/L485 485 600 22 Required for PSL 2
X80/L555 555 625 19 Required for PSL 2
X100/L690 690 770 18 Required for PSL 2

Specifications

Standard API Spec 5L Steel Plate for Pipeline
Steel Grade/Material Gr.B/L245 – X100/L690
Dimension T 5-350mm × W 900-4100mm × L 3000-25000mm
Packing Packed with steel-framed plywood pallets
Supply Conditions AR = as-rolled TM = thermo-mechanical controlled processing CR = controlled QT = quenched and tempered N = normalized
Place of Origin Made in China
MOQ 100 Tons/Grade/Size
Transportation Railway, By Sea

Applications of API Spec 5L Steel Plate for Pipeline

Oil and Gas Transportation:
Onshore and Offshore Pipelines: Used extensively for transporting crude oil, natural gas, and petroleum products over long distances. These pipelines can traverse various terrains, including land, sea, and challenging environments like arctic regions.
Subsea Pipelines: Deployed under the sea to connect offshore drilling platforms with onshore facilities, ensuring the efficient movement of hydrocarbons from extraction sites to processing plants.

Structural Applications:
Risers and Flowlines: API 5L steel plates fabricate risers and flowlines in offshore oil and gas production, which transport fluids from the seabed to surface facilities.
Support Structures: Employed in constructing structural components that require high strength and resilience, such as those in drilling rigs, production platforms, and refineries.

Infrastructure Development:
Urban Gas Distribution Networks: Utilized to construct pipelines that deliver natural gas to urban and rural areas, supporting residential, commercial, and industrial energy needs.
Water and Slurry Pipelines: Suitable for transporting water and slurry in mining and construction projects due to their excellent resistance to corrosion and mechanical stress.

Energy Sector:
Hydrogen Pipelines: With the increasing focus on hydrogen as a clean energy source, API 5L steel plates are being adapted for hydrogen transportation infrastructure, ensuring safe and efficient delivery from production sites to end-users.

Industrial Applications:
Chemical and Petrochemical Plants: These steel plates are used in pipelines within chemical processing and petrochemical plants, where they must withstand high pressures and corrosive environments.
Power Generation: API 5L steel plates are essential for constructing pipelines that feed fuel to turbines in power plants, particularly those utilizing natural gas.

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