Marzouk Steel, located in Tunis, Tunisia, has earned a solid reputation as a reliable manufacturer and supplier of carbon steel EN 10210-1 Grade S275NH pipes, serving the construction, engineering, and industrial sectors. With state-of-the-art production facilities and rigorous quality control measures, Marzouk Steel guarantees precise dimensions, consistent mechanical properties, and a top-notch surface finish. The company specializes in tailored pipe solutions, ensuring timely delivery and dependable technical support. Their S275NH pipes are crafted for structural applications, boasting excellent weldability, toughness, and durability—making them perfect for load-bearing frameworks, welded fabrications, and projects that demand long-lasting performance in challenging environments.
CS EN 10210-1 Grade S275NH Pipes are hot-finished structural hollow sections made from carbon steel. These pipes are designed for high strength, excellent toughness, and weldability. The material composition includes Carbon (0.18–0.22%), Manganese (0.60–0.90%), Phosphorus (≤0.035%), Sulfur (≤0.035%) and Nitrogen (0.01–0.02%). The “NH” designation ensures that the pipes have improved toughness. Making them suitable for use in structures exposed to challenging environments. These pipes meet the European standards for strength and reliability, providing long-lasting performance.
| Attribute | Specification |
|---|---|
| Type | Seamless / Welded / ERW |
| SHS (Square Hollow Sections) Sizes | 20 x 20 mm to 400 x 400 mm |
| Grade | S275NH |
| Length | 6000 mm to 14000 mm |
| Dimensional Tolerances | Thickness: All sizes +/- 10% |
| Standard | BS EN 10210 – Hot finished structural hollow sections of non-alloy and fine grain steels |
| Surface Protection | Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized |
| Dimension Range | 21.3 mm to 914 mm |
| Packing | In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or square cut, End Capped Certification & supplementary test, Finishing & Identity Mark |
| Wall Thickness | 0.5 mm to 25 mm |
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
|---|---|---|---|---|---|---|---|---|---|
| max 0.20 | max 0.40 | max 0.50-1.40 | 0.035 | 0.03 | max 0.10 | max 0.30 | max 0.30 | max 0.35 | V max 0.05 Al min 0.020 Nb max 0.05 Ti max 0.03 |
| Yield Strength | Tensile Strength | |||
|---|---|---|---|---|
| MPa min | ksi min | MPa min | MPa min | ksi min |
| 275 | 36000 | 370 | 530 | 36000 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
EN 10210-1 Grade S275NH pipes are hot-finished structural steel hollow sections made in accordance with EN 10210 standards. Their chemical makeup includes carefully controlled levels of carbon, manganese, and microalloying elements, which enhance weldability, ductility, and dependable mechanical performance. On the mechanical side, S275NH pipes offer a minimum yield strength of 275 MPa, good tensile strength, and adequate toughness at normal temperatures. These characteristics make them ideal for structural applications, ensuring durability, stability, and safe performance under both static and dynamic loads.
| DIN | EN | BS | NFA | ASTM | ASME |
|---|---|---|---|---|---|
| DIN 17123/24/25 Grade FGS 28 | EN 10210-1 Grade S275NH | – | ASTM A 633 Grade A | ASME SA 633 Grade SA | – |
S275NH carbon steel pipes find extensive use in construction, industrial buildings, bridges, and structural engineering projects. They are particularly well-suited for welded frameworks, columns, beams, and load-bearing hollow sections where strength, reliability, and long-term durability are essential. Additionally, these pipes are utilized in infrastructure, energy sector structures, and machinery supports. Thanks to their impressive mechanical strength, weldability, and toughness, S275NH pipes deliver safe, durable, and cost-effective performance in demanding structural and industrial applications.
Marzouk 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 Tunis, Tunisia.
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