Description
Product Description API 5L X80 Pipe
API 5L X80 pipe refers to a specific grade of steel pipe manufactured in accordance with the API 5L standard, which is set by the American Petroleum Institute. This standard governs the specification of line pipe used in the transmission of petroleum and natural gas, as well as other fluids in industries like oil and gas, water, and construction. The “X” in X80 indicates the pipe’s minimum yield strength in kilopounds per square inch (ksi). For X80, this means the pipe has a minimum yield strength of 80 ksi (kilo pounds per square inch), or about 550 MPa. X80 is a high-strength steel pipe used for challenging applications, particularly in high-pressure transmission pipelines.
Key Features of API 5L X80 Pipe
- High Tensile Strength: X80 pipes have a minimum yield strength of 555 MPa (80,000 psi), enabling them to withstand high-pressure environments.
- Corrosion Resistance: With optional coatings and treatments, these pipes provide excellent resistance to corrosion, especially in harsh environments.
- Versatility: Suitable for sour service, low-temperature service, and high-temperature service.
- Durability: High toughness and resistance to fractures, even under high stress.
- Cost-Effective: The enhanced mechanical properties of X80 allow for reduced wall thickness, leading to material cost savings without compromising performance.
API 5L X80 Pipe Dimension
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Wall Thickness (WT) |
| 1/8" | 0.405 in (10.3 mm) | 0.068 in (1.73 mm) |
| 1/4" | 0.540 in (13.7 mm) | 0.083 in (2.11 mm) |
| 1/2" | 0.840 in (21.3 mm) | 0.109 in (2.77 mm) |
| 3/4" | 1.050 in (26.7 mm) | 0.113 in (2.87 mm) |
| 1" | 1.315 in (33.4 mm) | 0.140 in (3.56 mm) |
| 1 1/4" | 1.660 in (42.2 mm) | 0.140 in (3.56 mm) |
| 1 1/2" | 1.900 in (48.3 mm) | 0.145 in (3.68 mm) |
| 2" | 2.375 in (60.3 mm) | 0.154 in (3.91 mm) |
| 2 1/2" | 2.875 in (73.0 mm) | 0.203 in (5.16 mm) |
| 3" | 3.500 in (88.9 mm) | 0.216 in (5.49 mm) |
| 4" | 4.500 in (114.3 mm) | 0.237 in (6.02 mm) |
| 5" | 5.563 in (141.3 mm) | 0.250 in (6.35 mm) |
| 6" | 6.625 in (168.3 mm) | 0.280 in (7.11 mm) |
| 8" | 8.625 in (219.1 mm) | 0.322 in (8.18 mm) |
| 10" | 10.750 in (273.1 mm) | 0.365 in (9.27 mm) |
| 12" | 12.750 in (323.9 mm) | 0.406 in (10.31 mm) |
| 14" | 14.000 in (355.6 mm) | 0.437 in (11.09 mm) |
| 16" | 16.000 in (406.4 mm) | 0.500 in (12.70 mm) |
| 18" | 18.000 in (457.2 mm) | 0.562 in (14.27 mm) |
| 20" | 20.000 in (508.0 mm) | 0.625 in (15.88 mm) |
| 24" | 24.000 in (610.0 mm) | 0.750 in (19.05 mm) |
| 30" | 30.000 in (762.0 mm) | 0.875 in (22.23 mm) |
| 36" | 36.000 in (914.4 mm) | 1.000 in (25.40 mm) |
| 42" | 42.000 in (1066.8 mm) | 1.000 in (25.40 mm) |
API 5L X80 Chemical Composition
| Element | Content (%) |
| Carbon (C) | 0.26 max |
| Manganese (Mn) | 1.20 max |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.015 max |
| Silicon (Si) | 0.45 max |
| Nickel (Ni) | 0.50 max |
| Chromium (Cr) | 0.50 max |
| Copper (Cu) | 0.50 max |
| Vanadium (V) | 0.12 max |
| Molybdenum (Mo) | 0.25 max |
| Titanium (Ti) | 0.06 max |
API 5L X80 Mechanical Properties
| Property | Value |
| Yield Strength | 80,300 psi (555 MPa) |
| Tensile Strength | 95,300 psi (655 MPa) |
| Elongation | 19% (for a 2-inch gauge length) |
| Charpy V-Notch Impact Test | 27 Joules (minimum) at -50°C (-58°F) |
Manufacturing Processes for API 5L X80 Pipe
API 5L X80 pipes can be manufactured using various methods, including:
- Seamless (SMLS): Produced from solid round billets, seamless pipes have no welded joints, ensuring superior strength and integrity.
- Electric Resistance Welded (ERW): Made by welding the edges of a steel strip, ERW pipes are cost-effective and suitable for medium-pressure applications.
- Submerged Arc Welding (SAW):
- LSAW (Longitudinal Submerged Arc Welding): Ideal for large-diameter pipes.
- HSAW (Helical Submerged Arc Welding): Also known as spiral-welded pipes, these are used for long-distance transportation.
Advantages of API 5L X80 Pipe
- Enhanced Strength:
- The high yield and tensile strength allow for thinner walls and lighter pipelines without compromising performance.
- Operational Efficiency:
- X80 pipes can operate at higher pressures, reducing the need for pump stations in long pipelines.
- Cost Savings:
- Reduced material and operational costs due to thinner walls and less frequent maintenance.
- Environmental Compatibility:
- Options for environmentally friendly coatings and lower energy requirements during transportation.
- Customizability:
- Available in various sizes, lengths, and coatings to meet specific project needs.
Technical Specifications of API 5L X80 Pipe
- Sizes:
- Outer Diameter (OD): 1/2″ to 48″ (12.7 mm to 1219.2 mm)
- Wall Thickness (WT): SCH 10 to SCH 160, XXS
- Length:
- Fixed Length: 6 m, 12 m, or as required
- Random Length: 4–12 m
- Coatings:
- 3LPE/3LPP (3-Layer Polyethylene/Polypropylene)
- FBE (Fusion Bonded Epoxy)
- Coal Tar Epoxy
- End Types:
- Plain End (PE)
- Beveled End (BE)
- Threaded End (TE)
Applications of API 5L X80 Pipe
- Oil and Gas Transportation
- Water Transmission Systems
- Structural Applications
- Sour Service Pipelines
- High-Temperature Applications
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