ALLLAND Boiler Steel Pipe Supply
API 5L X80 is a high-strength microalloyed line pipe steel produced under the American Petroleum Institute (API) 5L standard. As an API-certified steel pipe manufacturer with 25 years of experience, ALLLAND Steel Pipe Manufacturing Company possesses the production capability for the full range of API 5L line pipes from Grade B to X120. Among these, API 5L X80 is the core representative of our high-end product line.
Our products meet the requirements of API 5L PSL2 and, based on project needs, can be integrated with our five specialized anti-corrosion coating lines to provide 3PE, FBE, and other internal/external coating services.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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As the global energy structure continues to upgrade, API 5L X80 pipeline steel has become a critical material in high-end oil and gas transportation projects. It not only represents advanced pipeline manufacturing technology but also embodies modern pipeline engineering’s heightened pursuit of safety, stability, and long-term operational reliability. As one of the high-strength steel grades compliant with API 5L specifications, API 5L X80 is extensively utilized in major natural gas trunk lines, cross-regional crude oil transportation projects, and critical engineering initiatives in complex geological conditions.
O.D.:
1/2″-100″ (21.3mm-2540mm), with core products being LSAW 16″-60″ and SSAW 20″-100″.
W.T.:
LSAW process can achieve 6.35mm-50mm; SSAW: 6.0mm-25.4mm.
Length:
6-12 m, available in fixed or multiple lengths; custom lengths per project requirements.
Process:
TMCP controlled rolling and controlled cooling; LSAW submerged arc welding ; SSAW ; SMLS.
Standards:
API 5L; ISO 3183.
Steel Grades:
X80 PSL2.
Surface Treatment:
Black Painting; 3LPE Anti-corrosion Coating; FBE Coating; Bare Pipe
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
API 5L X80 is often used in large-scale, high-pressure projects, typically with larger dimensions. Wall thickness needs to be calculated according to specific design pressure; please contact us for detailed data sheets.
The table below shows common specification parameters for API 5L X80 PIPE:
| Nominal Pipe Size (NPS) | Nominal Outside Diameter (OD) mm | Wall Thickness Range (WT) mm | Reference Unit Weight (kg/m) |
| 16″ | 406.4 | 12.70 – 25.40 | 123.0 – 238.0 |
| 20″ | 508 | 14.27 – 28.58 | 173.0 – 337.0 |
| 24″ | 609.6 | 15.88 – 31.75 | 232.0 – 452.0 |
| 30″ | 762 | 17.48 – 33.32 | 320.0 – 598.0 |
| 36″ | 914.4 | 19.05 – 38.10 | 420.0 – 823.0 |
| 42″ | 1066.8 | 20.62 – 41.28 | 532.0 – 1043.0 |
| 48″ | 1219.2 | 22.23 – 44.45 | 656.0 – 1286.0 |
Note: Unit weight is estimated based on carbon steel density of 7.85g/cm³. Actual weight depends on specific wall thickness. ALLLAND can provide detailed weight calculation tables and pressure capacity analysis reports
The core of API 5L X80’s mechanical properties lies in its excellent balance of high strength and high toughness. The table below shows detailed mechanical property parameters based on the API 5L standard (PSL2) and actual production data.
| Performance Indicator | API 5L PSL2 Requirement | Description |
| Yield Strength | 555 – 705 MPa | The stress value at which the material begins permanent plastic deformation. |
| Tensile Strength | 625 – 825 MPa | Reflects the material’s ultimate load-bearing capacity. |
| Yield-to-Tensile Ratio | Typically ≤ 0.93 | A lower ratio indicates better plastic reserve and deformation capacity. |
| Elongation after Fracture | Calculated based on wall thickness, typically ≥ 18-22% | Reflects the material’s ability to deform plastically. |
| Charpy V-Notch Impact Energy (CVN) | Individual ≥ 40J, Average ≥ 60J at -20°C | Measures the material’s resistance to impact loads and brittle fracture. |
| Microhardness (HV10) | Typically ≤ 300 HV (no uniform limit, depends on project) | For sour service, typically ≤ 250 HV is required. |
| Element | C | Si | Mn | P | S | Nb | V | Ti | Mo | Ni | Cr | CEV |
| Content (%) | 0.04-0.08 | 0.20-0.35 | 1.50-1.75 | ≤0.015 | ≤0.005 | 0.04-0.08 | 0.03-0.05 | 0.01-0.02 | 0.10-0.25 | 0.10-0.30 | 0.20-0.30 | ≤0.43 |
Choosing ALLLAND means you gain not only high-quality steel pipes meeting API 5L PSL2 standards but also a full lifecycle solution encompassing technical support, anti-corrosion coating, welding services, and after-sales warranty. ALLLAND holds the following core advantages in the production and service of high-grade API 5L X80 steel pipes:
Integrated Factory: All critical processes, from raw material entry, strip/plate inspection, forming and welding, heat treatment to final product delivery, are completed in a closed loop within our own facility.
100% Non-Destructive Testing: All steel pipes undergo ultrasonic inspection and X-ray real-time imaging. Critical projects undergo additional phased array ultrasonic testing (PAUT) or time-of-flight diffraction (TOFD).
Supply Capacity: Annual production capacity of 250,000 tons, capable of batch supply for large-scale projects, with single orders reaching tens of thousands of tons.
Transnational/Trans-regional High-Pressure Long-Distance Natural Gas Trunk Lines:Used in national-level energy corridors like the West-East Gas Pipeline and the China-Russia Eastern Route, enabling large-volume, high-efficiency transmission.
ALLLAND Steel Pipe Manufacturing Co., Ltd. focuses on providing top-tier, API-certified pipelines and the professional support to meet your needs. Whether it is material selection, technical guidance, or timely delivery, we are committed to delivering excellent service at every step.
Currently, the production and application technology for API 5L X80 is highly mature, having been successfully used in major strategic projects like the China-Russia Eastern Route, establishing its market position as the mainstay high-grade steel.
Furthermore, future API 5L X80 will deeply integrate trends of intelligence and green development, enabling predictive maintenance, and its production processes will transition towards low-carbon manufacturing modes such as hydrogen-based steelmaking.
In summary, API 5L X80 will continue to serve as a critical material for energy infrastructure, playing an irreplaceable role in ensuring the safety of traditional oil and gas transmission and empowering emerging energy systems through technological innovation and application expansion.
The minimum yield strength of API 5L X80 reaches 555 MPa. Achieving such high strength requires obtaining a refined microstructure through controlled rolling plus accelerated cooling or quenching and tempering, thereby ensuring low-temperature toughness and weldability. Simple hot rolling (R) or normalizing (N) cannot meet its performance requirements.
PSL2 has mandatory requirements for impact toughness (CVN), drop weight tear testing (DWTT), carbon equivalent control, non-destructive testing, etc., and also imposes an upper limit on yield strength (not exceeding 705 MPa) to prevent the material from becoming too strong and brittle.
Yes, and API 5L X80 is an important option for deep-sea high-pressure subsea pipelines. Its high-strength characteristic allows for the use of relatively thinner walls in deep-water high-pressure environments, thereby reducing pipeline weight, lowering laying tension requirements, and saving installation costs.
API 5L X80 has good weldability, but requires more precise construction control.
