API 5L Grade B Seamless Steel Pipe
Product Detail
| Grades | API 5L Grade B, X42, X52, X56, X60, X65, X70, X80API 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 (Hot Rolled and Cold Rolled), Welded ERW (Electric resistance welded), SAW (Submerged Arc Welded) in LSAW, DSAW, SSAW, HSAW |
| Ends Type | Beveled ends, Plain ends |
| Length Range | SRL (Single Random Length), DRL (Double Random Length), 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 |
Surface Display
Black Painting
FBE
3PE (3LPE)
3PP
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 |
PRODUCT LEVEL
PSL 1: Standard technical requirements for general-purpose pipes.
PSL 2: Higher-grade pipes with stricter mechanical, chemical, and NDT standards.
PERFORMANCE AND APPLICATION
| API 5L Grade | Key Mechanical Properties (Yield Strength) | Applicable Scenarios in the Americas |
| Grade B | ≥245 MPa | Be used in low-pressure gas pipelines in North America and small oilfield gathering systems in Central America. |
| X42/X46 | >290/317 MPa | Midwest agriculture irrigation and South American energy infrastructure |
| X52 (Main) | >359 MPa | Oil and gas developments in Texas, Brazil, and Panama. |
| X60/X65 | >414/448 MPa | Medium-to-high pressure pipelines in the Gulf of Mexico |
| X70/X80 | >483/552 MPa | Long-distance oil pipelines in the U.S., deepwater oil & gas platforms in Brazil |
Technological Process
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Raw Material Inspection – Select and inspect high-quality steel billets or coils.
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Forming – Roll or pierce the material into pipe shape (Seamless / ERW / SAW).
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Welding – Join pipe edges by electric resistance or submerged arc welding.
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Heat Treatment – Improve strength and toughness through controlled heating.
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Sizing & Straightening – Adjust pipe diameter and ensure dimensional accuracy.
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Non-Destructive Testing (NDT) – Check for internal and surface defects.
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Hydrostatic Test – Test each pipe for pressure resistance and leaks.
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Surface Coating – Apply anti-corrosion coating (Black varnish, FBE, 3LPE, etc.).
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Marking & Inspection – Mark specifications and perform final quality checks.
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Packaging & Delivery – Bundle, cap, and ship with Mill Test Certificates.
Our Advantages
Local Support: Spanish-speaking branches handle customs and import processes.
Ample Stock: Sufficient inventory for fast order fulfillment.
Safe Packaging: Pipes securely wrapped and sealed to prevent damage.
Quick Delivery: Worldwide shipping to meet project deadlines.
Packing and Transportation
Packaging:
Packing: IPPC-fumigated pallets with 3-layer waterproof wrap and plastic caps protect against dust and moisture. Bundles (2–3 t) can be handled by small cranes on-site.
Sizes: Standard 12 m (container-friendly) and 8 m or 10 m for inland mountain transport (e.g., Guatemala, Honduras).
Documentation: Spanish CoO (Form B), MTC, SGS report, packing list, and invoice; corrections issued within 24 hours.
Transportation:
Transit Times: China → Panama 30 days, Mexico 28 days, Costa Rica 35 days. Local partners (e.g., TMM in Panama) handle port-to-site delivery efficiently.
FAQ
1. Are your API 5L line pipes compliant with the latest Americas standards?
Yes. Our API 5L pipes fully comply with the latest API 5L 45th Edition, ASME B36.10M tolerances, and local regulations such as Mexico’s NOM and Panama’s Free Trade Zone rules. All certificates (API, NACE MR0175, ISO 9001, etc.) are verifiable online.
2. How to choose the right API 5L grade (X52 vs X65)?
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Grade B / X42: Low-pressure gas, water, or irrigation (≤3 MPa)
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X52: Medium-pressure oil & gas (3–7 MPa) – versatile and widely used
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X65 / X70 / X80: High-pressure or offshore applications (≥7 MPa, 448–552 MPa yield)
Our engineers provide free guidance to help you select the optimal grade for your project.
Address
Bl20, Shanghecheng, Shuangjie Street, Beichen District, Tianjin, China
Phone
+86 13652091506











