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High Pressure API 5L X70 PSL1 PSL2 Seamless Steel Pipe 8 Inch Schedule 40 Carbon Steel Pipe for Pipeline
| API 5L Steel Pipe Product Detail | |
| Grades | API 5L Grade B, X42, X52, X56, X60, X65, X70, X80 |
| Specification Level | PSL1, PSL2 |
| Outer Diameter Range | 1/2” to 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16 inches, 18 inches, 20 inches, 24 inches up to 40 inches. |
| Thickness Schedule | SCH 10. SCH 20, SCH 40, SCH STD, SCH 80, SCH XS, to SCH 160 |
| Manufacturing Types | Seamless, Welded ERW, SAW in LSAW, DSAW, SSAW, HSAW |
| Ends Type | Beveled ends, Plain ends |
| Length Range | SRL , DRL , 20 FT (6 meters), 40FT (12 meters) or, customized |
| Protection Caps | plastic or iron |
| Surface Treatment | Natural, Varnished, Black Painting, FBE, 3PE (3LPE), 3PP, CWC (Concrete Weight Coated) CRA Clad or Lined |
API 5L Grade B Steel Pipe Size Chart
| Outside Diameter (OD) | Wall Thickness (WT) | Nominal Pipe Size (NPS) | Length | Steel Grade Available | Type |
| 21.3 mm (0.84 in) | 2.77 – 3.73 mm | ½″ | 5.8 m / 6 m / 12 m | Grade B – X56 | Seamless / ERW |
| 33.4 mm (1.315 in) | 2.77 – 4.55 mm | 1″ | 5.8 m / 6 m / 12 m | Grade B – X56 | Seamless / ERW |
| 60.3 mm (2.375 in) | 3.91 – 7.11 mm | 2″ | 5.8 m / 6 m / 12 m | Grade B – X60 | Seamless / ERW |
| 88.9 mm (3.5 in) | 4.78 – 9.27 mm | 3″ | 5.8 m / 6 m / 12 m | Grade B – X60 | Seamless / ERW |
| 114.3 mm (4.5 in) | 5.21 – 11.13 mm | 4″ | 6 m / 12 m / 18 m | Grade B – X65 | Seamless / ERW / SAW |
| 168.3 mm (6.625 in) | 5.56 – 14.27 mm | 6″ | 6 m / 12 m / 18 m | Grade B – X70 | Seamless / ERW / SAW |
| 219.1 mm (8.625 in) | 6.35 – 15.09 mm | 8″ | 6 m / 12 m / 18 m | X42 – X70 | ERW / SAW |
| 273.1 mm (10.75 in) | 6.35 – 19.05 mm | 10″ | 6 m / 12 m / 18 m | X42 – X70 | SAW |
| 323.9 mm (12.75 in) | 6.35 – 19.05 mm | 12″ | 6 m / 12 m / 18 m | X52 – X80 | SAW |
| 406.4 mm (16 in) | 7.92 – 22.23 mm | 16″ | 6 m / 12 m / 18 m | X56 – X80 | SAW |
| 508.0 mm (20 in) | 7.92 – 25.4 mm | 20″ | 6 m / 12 m / 18 m | X60 – X80 | SAW |
| 610.0 mm (24 in) | 9.53 – 25.4 mm | 24″ | 6 m / 12 m / 18 m | X60 – X80 | SAW |
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PSL 1 (Product Specification Level 1) : For pipelines built to a basic standard quality level.
PSL 2 (Product Specification Level 2) : Using higher mechanical properties, tighter chemical controls and NDT, more aggressive specification.
| Item | PSL1 | PSL2 | Notes |
| Chemical Composition Control | Standard limits on C, Mn, P, S | Stricter limits, lower P and S; additional microalloy element control allowed | PSL2 is more suitable for low-temperature and corrosive environments |
| Yield Strength (MPa) | According to grade specification | Same as PSL1; slightly higher for some high-grade steels | Basic mechanical requirements are similar |
| Tensile Strength (MPa) | According to grade specification | Same as PSL1 | |
| Elongation (%) | According to grade specification | Same as PSL1 | |
| Low-Temperature Impact (Charpy V-Notch) | Optional or per end-use requirement | Mandatory; typically tested at -20°C or -50°C | Enhances toughness at low temperature |
| Weldability | Meets standard requirements | Stricter, weldability tests often required | PSL2 demands higher weld performance |
| Dimensional Tolerance | Standard range | Stricter | PSL2 has tighter control on diameter and wall thickness |
| Defect Control / NDT | Standard inspection; UT/RT optional | Mandatory UT/RT/MPI | Ensures higher pipeline safety |
| Application Environment | General pipeline transportation | High-pressure, low-temperature, corrosive pipelines | PSL2 is preferred for projects with high safety requirements |
| Cost | Relatively lower | Slightly higher | Due to stricter inspection and manufacturing requirements |
| API 5L Grade | Minimum Yield Strength (MPa) | Typical Applications in the Americas |
| Grade B | ≥ 245 MPa | Low-pressure natural gas pipelines in North America; small-diameter oil gathering pipelines in Central America |
| X42 / X46 | ≥ 290 / 317 MPa | Agricultural irrigation pipelines in the U.S. Midwest; urban energy distribution networks in South America |
| X52 (Main Grade) | ≥ 359 MPa | Onshore oil & gas gathering lines in Texas shale fields; Brazil domestic pipeline networks; cross-border natural gas pipelines (e.g., Panama region) |
| X60 / X65 | ≥ 414 / 448 MPa | Canadian oil sands transportation pipelines; Gulf of Mexico medium- to high-pressure offshore pipeline systems |
| X70 / X80 | ≥ 483 / 552 MPa | Long-distance high-pressure transmission pipelines in the U.S.; deepwater offshore oil & gas projects in Brazil |
Raw Material Inspection – Choose and inspect the good quality steel billets or coils.
Forming – Roll or pierce into pipe form (Seamless / ERW / SAW).
Welding –In-pipe joints are made by electric resistance welding or submerged arc welding.
Heat Treatment – Enhance strength and toughness by precise heating.
Sizing & Straightening – Modify the diameter of the tube and confirm the size is correct.
Non-Destructive Testing (NDT) – Inspect for inward and surface flaws.
Hydrostatic Test – Test each pipe for strength and leaks.
Surface Coating – Apply corrosion protection layer (black varnish, FBE, 3LPE, etc.).
Marking & Inspection – Mark the specifications and do the final quality inspections.
Packaging & Delivery – Pack, stack, and deliver with Mill Test Certificates.
Royal Steel Group provides reliable API 5L steel pipe solutions for oil, gas and infrastructure projects across the Americas. With stable manufacturing capacity, strict quality control, and international project experience, we ensure consistent supply for complex engineering demands.
We combine competitive factory pricing with full technical support, covering material selection, coating solutions, and export documentation, helping clients reduce procurement risk and improve project efficiency.
If you are sourcing steel pipes for upcoming projects, we can provide fast quotation and project-based support.
Packaging Guarantee
Our API 5L steel pipes are packaged according to international export standards. Pipes are bundled with steel straps, protected by waterproof wrapping, and fitted with plastic or steel end caps to prevent damage, moisture, and contamination during transportation and storage.
Customized Specifications
Standard lengths up to 12 meters are available for efficient shipping. Custom lengths, diameters, wall thicknesses, and coating systems can be supplied to meet specific project requirements.
Documentation Support
We provide complete export documentation, including Mill Test Certificates (MTC), Certificate of Origin, Packing List, Commercial Invoice, and third-party inspection reports when required.
Professional Logistics
Shipments can be arranged by container, breakbulk, or bulk vessel based on order size and destination. Our experienced logistics team ensures safe, timely, and cost-effective delivery worldwide.
1. What is the difference between PSL1 and PSL2?
PSL2 has stricter requirements for chemical composition, mechanical properties, and testing, making it suitable for critical oil and gas pipeline projects.
2. Which API 5L grade should I choose?
Grade B is commonly used for general pipelines, while X52, X60, X65, and above are preferred for higher-pressure transmission systems. The selection depends on project requirements and operating conditions.
3. Do you supply seamless and welded API 5L pipes?
Yes. We supply Seamless, ERW, LSAW, and SSAW API 5L steel pipes in a wide range of sizes and grades.
4. Can you provide Mill Test Certificates and inspection reports?
Yes. EN 10204 3.1 MTC, third-party inspection reports, and other quality documents are available upon request.
5. What is your production lead time?
Normally 15–45 days, depending on pipe specifications, quantity, and coating requirements.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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