API 5L Gr.B Seamless Line Pipe – Oil & Gas Transmission Grade
Product Overview
API 5L Grade B seamless line pipe is the industry-standard material for onshore oil and natural gas transmission pipelines. Manufactured and tested according to American Petroleum Institute (API) specifications, it delivers reliable strength, toughness and weldability for long-distance pipeline service. This grade is available in both PSL1 and PSL2 quality levels, suitable for everything from general gathering lines to critical trunk pipeline projects.
Why Choose CNB API Line Pipe?
Our API line pipes are sourced from API-certified mills with full API 5L manufacturing licenses. Every pipe undergoes strict quality control including hydrostatic testing, ultrasonic inspection and dimensional verification to ensure full compliance with API standards. We offer both bare pipe and fully coated pipe with various anti-corrosion systems, providing a complete one-stop solution for pipeline projects.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | API 5L Grade B Seamless Line Pipe |
| Steel Grade | API 5L Grade B / B equivalent |
| Quality Level | PSL1 / PSL2 |
| Manufacturing Process | Hot rolled seamless |
| Outer Diameter Range | 2" – 48" (60.3mm – 1219mm) |
| Wall Thickness Range | SCH20 – SCH160 |
| Standard Lengths | 12m single random / 24m double random |
| Surface Condition | Bare black / 3PE coated / FBE coated |
| End Preparation | Beveled end (standard for welding) |
| Applicable Standards | API Spec 5L, ISO 3183 |
| Minimum Yield Strength | ≥245MPa |
| Minimum Tensile Strength | 415–760MPa |
Core Advantages
- API certified quality: Full compliance with API 5L standards for oil & gas pipeline service.
- High toughness: PSL2 grade provides guaranteed Charpy impact performance for critical pipeline applications.
- Complete coating options: Available with all common anti-corrosion coating systems for buried and exposed service.
- Full traceability: Complete material documentation from melt to finished coated pipe.
- Project-ready supply: Available in standard pipeline lengths with beveled ends ready for field welding.
Applications
This API 5L Gr.B seamless line pipe is widely used for onshore oil transmission pipelines, natural gas distribution networks, gas gathering systems, water injection pipelines and general hydrocarbon transmission projects.
Get a Quotation
We supply API line pipe in grades B through X70, in both seamless and welded constructions, with various coating and end preparation options. Full project documentation and third-party inspection are available upon request. Contact our pipeline team for a detailed project quotation.
