As a prominent supplier, Excellent Overseas is responsible for delivering unparalleled quality in API 5L X56 Seamless Pipe Suppliers and API 5L X56 PSL2 Material Stock from leading Manufacturers like Tubes, MSL, Seah, Hyundai, ArcelorMittal and NSSMC.
Table of Content
API 5L X56 Pipe Supply Range and Dimensions
NACE MR0175 / ISO 15156 & PED 97/23/EC Compliant
Excellent Overseas Supplies API 5L X56 Pipe With Wide Range of Sizes.
Manufacturers in Stock
API 5L Grade X56 PSL2 Welded Pipe Chemical Composition
| Name | Product Form | C | Si | Mn | P | S | V | Nb | Ti | Others |
|---|---|---|---|---|---|---|---|---|---|---|
| X56 | TS | ≤ 0.26 | - | ≤ 1.40 | ≤ 0.030 | ≤ 0.030 | c | c | c | - |
| TW | ≤ 0.24 | - | ≤ 1.40 | ≤ 0.030 | ≤ 0.030 | c | c | c | - | |
| X56N | TS / TW | ≤ 0.22 | ≤ 0.45 | ≤ 1.60 | ≤ 0.025 | ≤ 0.015 | ≤ 0.10c | ≤ 0.05c | ≤ 0.04c | - |
| L390N | TS / TW | ≤ 0.22 | ≤ 0.45 | ≤ 1.60 | ≤ 0.025 | ≤ 0.015 | ≤ 0.102 | ≤ 0.052 | ≤ 0.042 | 5) |
TS = Seamless Tubes; TW = Welded Tubes
X56 Carbon Steel Pipe Mechanical Properties
PDO and EDO Approved API 5L X56 Pipe Supplier in Thailand, delivering high yield strength carbon steel line pipes with mill test certificates
| Steel Grade | Delivery Condition | Yield / Proof Strength Rt0.5 (N/mm²) |
Tensile Strength Rm (N/mm²) |
Elongation (%) | Impact Energy ISO-V - Transverse (J) at 0°C |
|---|---|---|---|---|---|
| X56 PSL 1 | a) | min. 390 | min. 490 | 25 | - |
| L390 PSL 1 | a) | min. 390 | min. 490 | 25 | - |
| X56N PSL 2 | N | 390 - 545 | 490 - 760 | 25 | - |
| L390N PSL 2 | N | 390 - 545 | 490 - 760 | 25 | 40 transverse / 60 longitudinal |
API 5L X56 PSL1 Seamless Pipe Equivalent Grades
| Standard | Specification Level | Equivalent Grade | Notes |
|---|---|---|---|
| ASTM API 5L (Specification for line pipe) |
PSL1 | L390 or X56 | Basic level standard requirement |
| PSL2 | L390Q or X56Q L390M or X56M |
Enhanced requirements, Charpy testing mandatory | |
| DNV-OS-F101 | Offshore Standard | 390 / 390U / 390S | Submarine pipeline systems |
| EN 10208-2 | European Standard | L390 | Steel pipes for combustible fluids |
Excellent Overseas is a Reliable API 5L X56 Pipe Stockist With Ready Inventory.
Leading API 5L X56 pipe stockist worldwide. Request stock list, price and full documentation.
Quote NowAPI 5l X56 vs X60 Pipe Key Differences
One strength grade apart. Here's what that step actually changes.
| Feature | X56 (L390 · PSL2) | X60 (L415 · PSL2) |
|---|---|---|
| Strength, At a Glance | ||
| Yield Strength (SMYS) | 386 MPa · 56,000 psi | 414 MPa · 60,000 psi |
| Tensile Strength (SMTS) | 490 MPa · 71,000 psi | 517 MPa · 75,000 psi |
| Practical Differences | ||
| Wall, Same Pressure | Thicker | Thinner (−6–7%) |
| Steel Weight | Heavier/joint | Lighter/joint |
| Price / Tonne | Baseline | +3–5% |
| Weldability | Excellent | Very good |
| Duty | Gathering | Transmission |
| Best Fit | Budget runs | Long, high-P |
ISO 3183 L390 Pipe Heat Treatment
| Heat Treatment |
|---|
| Quenched and Tempered |
| 940° C Water for 15 min. and 680° C Air for 60 min. |
Applications of API 5L X56 Pipes
Process of Manufacturing
X56 Grade PSL2 Line Pipe Coatings
Excellent Overseas supplies HIC and SSCC Tested API 5L X56 Pipe in Sarawak, Selangor, Pahang, Pathum Thani, West Java and Kepulauan RIAU with Multilayer Coating as per Requirement.
Qatar Gas Approved API 5L X56 Pipe Supplier in Malaysia stocking 3PE coated, FBE coated seamless pipes suitable for high pressure gas transmission applications.
Surface Finish: Natural, Black Painting, Varnished
Lining/Cladding: CRA Clad and Lined Pipe
Protective Coatings: 3LPE, 3PP, FBE, 3PE
End Protection Caps: Plastic or Iron
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Countries We Export To
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Spain
South Korea
Japan
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Oman
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