Tuyau en acier API 5L
Supplier & Factory Price
Complete range: Grade B to X70, SMLS & Welded (ERW, LSAW, SSAW). PSL1 & PSL2 compliant for oil, gas, and water transportation.
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PSL1 vs PSL2: Which Quality Level Do You Need?
“PSL” stands for Product Specification Level. This is the most important question for every buyer.
PSL1
STANDARDPSL1 is a standard quality level for line pipes. It is good for general projects where the environment is not too harsh.
Idéal pour :
Water transport or low-pressure oil lines
PSL2
HIGH QUALITYPSL2 is a higher quality level. It has much stricter rules for chemical composition and strength.
Idéal pour :
Offshore drilling, high-pressure gas lines, and projects in very cold areas
PSL1 vs PSL2 Comparison Table
| Fonctionnalité | PSL1 Pipe | PSL2 Pipe |
|---|---|---|
| Test d'impact | Not Required | Mandatory (Required) |
| Traçabilité | Basic | Very Strict (Full record) |
| Qualité du soudage | Standard | Haute résistance |
| Composition chimique | Standard Limits | Stricter Limits |
Four Manufacturing Types: Seamless vs. Welded
We supply API 5L steel pipes in both welded and seamless types. All products come with complete material certificates, third-party inspection.
SMLS
SEAMLESSMade from a solid steel billet that is heated and pierced. No weld seams.
Why buy it:
Strongest type. Zero risk of seam failure. Handles extremely high pressure.
Size: 2″ – 24″
REG
WELDEDMade from steel coils. Edges heated by electricity and pressed together.
Why buy it:
Cost-effective for medium-pressure. Fast production for quick delivery.
Size: 4″ – 24″
LSAW
WELDEDHeavy steel plates bent into “U” or “O” shape, welded straight down.
Why buy it:
“Big brother” of welded pipes. Top choice for long-distance, high-pressure lines.
Size: 16″ – 60″
SSAW
WELDEDSteel strips welded in a spiral shape, like a giant straw.
Why buy it:
Most economical for large-scale projects. Very large diameters possible.
Size: 20″ – 100″
Which Steel Grade Do You Need?
We offer many API 5L pipe grades. Choose the most suitable one for your project.
Most common and affordable. Perfect for standard water or low-pressure oil transport.
Slightly better strength. Very popular for city gas distribution networks.
Balance between strength and easy welding. Common in local transmission lines.
Excellent strength. Used worldwide for both onshore and offshore oil and gas projects.
Known for high reliability. Premium choice where safety and durability are priorities.
One of the strongest grades. Designed for extreme environments and highest pressure requirements.
Anti-Corrosion Coating Solutions
Professional External Coatings and Internal Linings. All comply with international standards.
External Coatings
3PE Coating
30 YEARSThree layers: epoxy, adhesive, and polyethylene. Most popular for oil and gas pipelines.
Best for: Main oil and gas transmission lines
FBE Coating
HIGH-TEMPFusion Bonded Epoxy. Great adhesion and handles higher temperatures than 3PE.
Best for: Complex pipeline parts, high-temperature areas
CTE / Epoxy
COST-EFFECTIVEClassic, cost-effective solution. Thick layer of epoxy or coal tar to block moisture.
Best for: Sewage pipes, basic water projects
Internal Linings
Internal Cement Mortar Lining
Apply a layer of cement inside the pipe. Keeps water clean and stops corrosion.
- Keeps water clean and safe
- Stops internal pipe corrosion
- Makes water flow smoother
Best for: Potable (drinking) water pipelines
Internal Epoxy Lining
Spray a smooth epoxy layer inside. For gas or oil pipes.
- Reduces friction significantly
- Gas flows faster, saves energy
- Saves money for pipeline operators
Best for: Natural gas and oil pipelines
How Do We Test API 5L Pipes?
100% Leak-Proof Guarantee. Third-Party Inspection Support.
Hydrostatic Testing
Fill pipe with water and increase pressure to very high level.
The Goal: Ensure pipe body and weld never leak or burst under high pressure.
Ultrasonic Testing (UT)
Use high-frequency sound waves to “see” inside the steel.
The Goal: Find hidden cracks, holes, or air bubbles invisible to the eye.
X-Ray Inspection
For LSAW and SSAW pipes. Check welding seam with X-ray.
The Goal: Ensure weld is 100% continuous and strong. Like a “medical check-up.”
Chemical & Mechanical Testing
Analyze chemical composition and mechanical properties.
The Goal: Verify steel meets API 5L specification requirements.
Contrôle dimensionnel
Use high-precision tools to measure critical dimensions.
Measures: OD, Wall Thickness, Length, Straightness
Inspection par un tiers
We welcome international inspection companies.
Accepted: SGS, BV, Moody, and other international agencies
Why Choose Gnee Steel as Your API 5L Pipe Supplier?
Full Certification
API 5L, ISO 9001, and CE certificates. All documentation provided with every shipment.
Strict Inspection
We test every pipe for leaks and cracks before shipping. Zero defects policy.
Fast Shipping
Near major ports. Quick delivery worldwide. Proper anti-rust packaging for ocean freight.
Successful API 5L Pipe Projects Worldwide
Real projects. Real results. See how Gnee Steel helped clients around the world.
Oil Pipeline Project
City Water System
Natural Gas Network
Mining Pipeline Project
Questions fréquemment posées
Get answers to the most common questions about API 5L steel pipes.
PSL1 (Product Specification Level 1) is the standard quality level suitable for general applications like water transport or low-pressure oil lines. It doesn’t require impact testing.
PSL2 (Product Specification Level 2) has much stricter requirements for chemical composition, yield strength, and mandatory impact testing. It’s essential for offshore drilling, high-pressure gas lines, and projects in extremely cold environments.
Yes, all Gnee API 5L pipes come with triple certification:
- API 5L – American Petroleum Institute standard
- ISO 9001 – Quality management system
- CE Marking – European conformity
Material Test Certificates (MTC) are provided with every shipment.
Absolutely! We provide complete material traceability including:
- Heat numbers and batch codes
- Mill test certificates from steel mills
- Chemical composition reports
- Mechanical property test results
PSL2 pipes come with enhanced traceability documentation as required by API 5L specification.
We take multiple protective measures for ocean freight:
- Anti-rust oil coating on all pipe ends and surfaces
- Plastic caps on both ends to prevent moisture
- Secure bundling with steel straps
- Proper dunnage to prevent movement in containers
All packages are marked with desiccants and waterproof markings.
Yes, we offer flexible manufacturing capabilities:
- OD Range: 2″ to 100″ (60mm to 2540mm)
- Wall Thickness: 4mm to 30mm
- Longueur: 6m to 18m (or as required)
- Special Ends: Plain end, beveled, threaded & coupled
Custom specifications can be discussed during the inquiry process.
Yes, we provide complete pipeline solutions:
- Fittings: Elbows, tees, reducers, caps (API 5L / ASME B16.9)
- Flanges: Weld neck, slip-on, blind (ANSI / DIN / JIS)
- Valves: Ball valves, gate valves, check valves
- Coatings: All types of anti-corrosion solutions
One-stop shopping for your complete pipeline project needs.
Need a Professional API 5L Solution?
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Contact Us Now to Get:
Latest API 5L Pipe Price List
Competitive factory-direct pricing for all grades and sizes
Technical Support from Engineers
Professional guidance for grade selection and specifications
Free Sample of Steel Material
Physical samples available for quality verification
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