Luke Steel is a prominent API 5L Grade L390 Pipes supplier, providing higher-quality products from Houston, Houstan, for high-pressure pipeline applications. The L390 grade, or X56, is specifically suitable for challenging conditions, such as long-distance petroleum and gas transmission. Our pipes are made according to API 5L specifications and come in seamless or welded form with full traceability. Luke Steel ensures strict quality control, material testing, and customer-focused service, making us the preferred partner for clients across the energy, infrastructure, and petrochemical sectors.
API 5L Grade L390 Pipe features carbon steel with added manganese and trace alloying elements such as niobium and titanium for strength enhancement. It offers a minimum yield strength of 390 MPa and tensile strength between 490–660 MPa. The pipe is highly weldable, resistant to fracture, and performs well under high internal pressure. It is intended for use both in sour and non-sour service environments and is toughness-tested, dimensionally accurate, and hydrostatic pressure-tested according to API 5L specifications.
| Specification | API 5L / ISO 3183 Hot Rolled . |
| API 5L Grade L390 Pipe Type | Seamless |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Outer Diameter Size | 3/8″ NB To 30″ NB (Nominal Bore Size) |
| Wall Thickness | Schedule 20 To Schedule XXS (Heavier On Request) Up to 250 mm Thickness |
| Length | 5 To 7 Meters, 09 To 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| Pipe Ends | Plain Ends / Beveled Ends / Coupling |
| Surface Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
|---|---|---|---|---|---|---|---|---|---|
| max 0.28 | – | max 1.40 | 0.03 | 0.03 | – | – | – | – | Nb+Ti+V max 0.15 |
| Yield Strength | Tensile Strength | Elongation A5 min | |||
|---|---|---|---|---|---|
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 490 | – | 71 | – | ||
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Luke Steel is a top manufacturer and supplier of high-quality API 5L Grade L390 Pipe products in Houstan, USA. Specializing in steel solutions, we provide a wide range of products, including Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel. Our offerings include Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates. Known for our reliable delivery and superior customer service, we are committed to offering top-tier steel materials that ensure durability and performance across a wide range of industrial applications. We strive to meet the highest standards, making us a trusted partner for all your steel needs.
L390 pipes find widespread application in high-pressure pipelines of natural gas and crude oils. Their toughness and strength qualify them for rough conditions including offshore drilling platforms, pipelines at high altitudes, and deep well underground installations. These pipes also find applications in refineries, petrochemical plants, and pipeline installations demanding uniform quality in alternating pressure. With great resistance to deformation and cracking, L390 provides reliability and safety in essential infrastructure projects across the globe.
Luke Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Houstan, USA.
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