L360 pipeline pipe is an important pipe widely used in the field of oil and gas transportation. "L" represents LinePipe steel, and "360" represents a minimum yield strength of 360MPa. This type of steel pipe is designed for long-distance transportation of fluids such as oil and natural gas, and requires high strength, corrosion resistance, and weldability at the same time.
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Technical Parameters & Chemical Composition of API L360 pipelines for combustible fluids
| Element | Carbon (C) max | Manganese (Mn) max | Yield Strength (min) | Tensile Strength (min) |
| L360 (PSL1) | 0.28% | 1.40% | 360 MPa (52.2 ksi) | 460 MPa (66.7 ksi) |
| L360Q/M (PSL2) | 0.22% | 1.45% | 360 - 510 MPa | 460 - 760 MPa |
Product Size & Specification Table of API L360 Carbon Steel Line Pipe
| Parameter | Standard Range |
| Outside Diameter (OD) | 21.3mm – 610mm (1/2" – 24") |
| Wall Thickness (WT) | 2.0mm – 22mm (SCH 10 to SCH 80/160) |
| Standard Length | 5.8m, 6.0m, 11.8m, 12.0m (Fixed or Random) |
| Standard Compliance | API 5L, ASTM A53, EN 10219, ISO 3183 |
API L360 (X52) ERW Pipe Dimensions & Theoretical Weight Chart
| Nominal Pipe Size (NPS) | Outside Diameter (OD) - mm | Schedule (SCH) | Wall Thickness (WT) - mm | Weight ( kg/m ) |
| 1/2" | 21.3 | SCH 40 (STD) | 2.77 | 1.27 |
| SCH 80 (XS) | 3.73 | 1.62 | ||
| 3/4" | 26.7 | SCH 40 (STD) | 2.87 | 1.69 |
| SCH 80 (XS) | 3.91 | 2.20 | ||
| 1" | 33.4 | SCH 40 (STD) | 3.38 | 2.50 |
| SCH 80 (XS) | 4.55 | 3.24 | ||
| 2" | 60.3 | SCH 40 (STD) | 3.91 | 5.44 |
| SCH 80 (XS) | 5.54 | 7.48 | ||
| 3" | 88.9 | SCH 40 (STD) | 5.49 | 11.29 |
| SCH 80 (XS) | 7.62 | 15.27 | ||
| 4" | 114.3 | SCH 40 (STD) | 6.02 | 16.07 |
| SCH 80 (XS) | 8.56 | 22.32 | ||
| 6" | 168.3 | SCH 40 (STD) | 7.11 | 28.26 |
| SCH 80 (XS) | 10.97 | 42.56 | ||
| 8" | 219.1 | SCH 20 | 6.35 | 33.31 |
| SCH 40 (STD) | 8.18 | 42.55 | ||
| SCH 80 (XS) | 12.70 | 64.64 | ||
| 10" | 273.1 | SCH 20 | 6.35 | 41.77 |
| SCH 40 (STD) | 9.27 | 60.31 | ||
| SCH 80 (XS) | 15.09 | 95.97 | ||
| 12" | 323.8 | SCH 20 | 6.35 | 49.73 |
| SCH 40 (STD) | 10.31 | 79.73 | ||
| SCH 80 (XS) | 17.48 | 132.08 | ||
| 16" | 406.4 | SCH 20 | 7.92 | 77.83 |
| SCH 40 (STD) | 12.70 | 123.30 | ||
| SCH 80 (XS) | 21.44 | 203.53 | ||
| 20" | 508.0 | SCH 20 | 9.53 | 117.15 |
| SCH 40 (STD) | 15.09 | 183.42 | ||
| SCH 80 (XS) | 26.19 | 311.18 | ||
| 24" | 610.0 | SCH 20 | 9.53 | 141.12 |
| SCH 40 (STD) | 17.48 | 255.44 | ||
| SCH 80 (XS) | 30.96 | 442.08 |
Access the complete API L360 (X52) ERW pipe size chart and wall thickness (SCH 40/80). High-frequency induction welding ensures perfect circularity and precision.
API L360 High Yield Line Pipes Production Process: High-Frequency Induction (HFI/ERW)
Uncoiling & Leveling: The steel coil is flattened to ensure uniformity.
Continuous Forming: The plate passes through rollers to form a cylindrical shape.
High-Frequency Welding: Resistance heat fuses the edges without any external welding rod.
Weld Seam Heat Treatment (Sizing): A critical step to normalize the microstructure of the weld, ensuring it is as strong as the base metal.
Cooling & Sizing: The pipe is cooled and precisely adjusted to the required OD.
API 5L L360 Oil and gas pipe lines Surface Treatment Selection by Application
For Buried Oil & Gas Lines: 3LPE (Triple Layer Polyethylene) or FBE (Fusion Bonded Epoxy). These provide the highest corrosion resistance in humid tropical soils.
For Water Transmission: Internal Liquid Epoxy Coating and external Bitumen or Varnish to ensure water purity and prevent oxidation.
For Industrial Structures: Hot-Dip Galvanizing (HDG). Best for coastal projects in Chile or Peru where salt-air corrosion is extreme.
Standard Storage: Black Vanish or Light Oiling to prevent surface rust during short-term warehouse storage.
Quality Inspection for API 5L L360 ERW Pipes
Flattening & Flare Test: Ensures the weld does not crack under mechanical deformation.
Online Ultrasonic Testing (UT): Continuous scanning of the weld seam during production.
Hydrostatic Test: 100% of pipes are tested for leak-proof performance under high pressure.
Eddy Current Testing: Detecting surface and near-surface defects with high precision.
Packaging and shipping of API 5L L360 Carbon Steel Line Pipe
FAQ
What is the difference between ERW pipe and normal pipe?
Most or all pipes in the piping industry are produced seamlessly or through the welding/Erw process. The main difference between seamless and erw pipe is that a seamless pipe is produced without the help of welds or seams, however, erw pipes are manufactured by welding pieces of steel longitudinally.
Where are ERW pipes used?
ERW pipes are extensively used in agriculture, industry and construction activities like scaffolding and casing in bore wells. These are used for conveying water, gas, crude oil and chemicals at various pressures and densities over long distances.
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