API 5L Grade X65 PSL2 Seamless Line Pipe Manufacturer & Supplier
API 5L Grade X65 PSL2 Seamless Line Pipe is a high-strength carbon steel pipeline material designed for oil and gas transmission systems, offshore pipelines, refinery piping, and high-pressure applications.
As a professional API 5L X65 PSL2 seamless line pipe manufacturer and supplier, we deliver project-approved pipes with full traceability, strict quality control, and compliance with API 5L (latest edition) and ISO 3183 standards.
Our seamless X65 PSL2 pipes provide excellent weldability, high toughness, and superior low-temperature performance, making them suitable for long-distance pipeline construction and demanding offshore environments.
FBE and 3LPE coated pipes are available upon request.
What is API 5L X65 PSL2?
API 5L X65 is a high-strength pipeline steel grade with a minimum yield strength of 65,000 psi (450 MPa).
PSL refers to Product Specification Level:
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PSL1 – Basic quality level
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PSL2 – Enhanced quality level with stricter chemical, mechanical, and testing requirements
PSL2 includes mandatory impact testing, stricter chemical composition limits, and additional non-destructive testing requirements.
Delivery Conditions
| PSL | Delivery Condition | Grade Designation |
|---|---|---|
| PSL1 | As-rolled / Normalized / TMCP | X65 (L450) |
| PSL2 | Thermomechanical rolled | X65M (L450M) |
| PSL2 | Quenched and tempered | X65Q (L450Q) |
PSL2 pipes are typically supplied in thermomechanically rolled (M) or quenched and tempered (Q) condition to ensure improved toughness and mechanical consistency.
Available Sizes
| Item | Range |
|---|---|
| Outside Diameter | 1/2″ – 56″ (21.3 mm – 1420 mm) |
| Wall Thickness | SCH 10 – XXS, up to 60 mm |
| Length | 5–12 m (R1, R2, R3) or customized |
| Ends | Plain End (PE) / Beveled End (BE) |
| Coating | FBE / 3LPE / Anti-corrosion coating |
Chemical Composition – PSL2 (t ≤ 25 mm)
| Grade | C (max) | Mn (max) | P (max) | S (max) | CE (max) |
|---|---|---|---|---|---|
| X65Q | 0.18 | 1.70 | 0.025 | 0.015 | 0.43 |
| X65M | 0.12 | 1.60 | 0.025 | 0.015 | 0.43 |
Lower carbon content in PSL2 improves weldability and toughness.
Mechanical Properties – PSL2
| Property | Minimum | Maximum |
|---|---|---|
| Yield Strength | 450 MPa | 600 MPa |
| Tensile Strength | 535 MPa | 760 MPa |
| Y/T Ratio | — | 0.93 |
| Impact Test | Mandatory | — |
PSL2 ensures tighter control of yield-to-tensile ratio and improved fracture toughness.
Mandatory PSL2 Tests
API 5L X65 PSL2 Seamless Line Pipe requires:
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Chemical analysis
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Tensile testing
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Charpy V-notch impact testing
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Hydrostatic testing
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Ultrasonic testing (UT)
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Dimensional inspection
These requirements ensure suitability for critical oil & gas transmission projects.
Applications
API 5L X65 PSL2 seamless line pipes are widely used in:
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Onshore oil & gas transmission pipelines
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Offshore and subsea pipeline systems
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Refinery piping
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High-pressure gas transmission
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Cross-country pipeline projects
Due to their high strength and fracture resistance, X65 PSL2 pipes are ideal for long-distance, high-pressure service.
Order Example
Product: API 5L Grade X65 PSL2 Seamless Line Pipe
OD: 508 mm
Wall Thickness: 12.7 mm
Length: 12 m
End: Beveled End (BE)
Coating: 3LPE
Standard: API 5L (Latest Edition)
Quantity: 180 MT
Certification: API 5L + EN 10204 3.1
Related Products
ASTM A106 Grade B seamless Pipes
ASTM A106 grade C seamless Pipes
ASTM A333 grade 6 Seamess Pipes
API 5L Grade X65 PSL2 Seamless Line Pipe provides high strength, superior toughness, and strict quality control for critical oil and gas pipeline applications. Manufactured in accordance with API 5L and ISO 3183 standards, our seamless X65 PSL2 pipes ensure long-term performance and reliability in demanding environments.
Contact us for technical support and project quotations.