Marzouk Steel, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality steel products, serving industries that require durability, precision, and performance. Among its specialized offerings is Alloy Steel T11 Tubing, engineered for high-pressure, high-temperature, and mechanically demanding applications. Manufactured using advanced technology and strict quality control, T11 tubing provides consistent strength, dimensional accuracy, and long-term reliability. Marzouk Steel ensures that every T11 tube meets international standards, giving engineers and fabricators a dependable material for power generation, petrochemical, and industrial systems where safety, efficiency, and operational reliability are critical.
Alloy Steel T11 Tubing is a chromium-molybdenum (Cr-Mo) alloy steel designed to provide high tensile and yield strength, toughness, and thermal stability. Its chemical composition, including carbon, chromium, and molybdenum, ensures excellent impact resistance, fatigue performance, and dimensional stability. T11 tubing responds effectively to heat treatment, optimizing hardness and mechanical properties. With superior strength under high-pressure and high-temperature conditions, T11 tubing maintains structural integrity and long-term durability, making it ideal for industrial, mechanical, and power generation applications.
| ASTM A213 T11 Specification & Standard | ASTM A213 T11, ASME SA213 T11 (with IBR Test Certificate) |
|---|---|
| SA 213 Gr T11 Specification | ASTM A213 & ASTM A209 (T1 , Ta, T1b) BS/3059/ 90/ Part II/ 620 & 622 DIN/ 17175/ 13CrMo44 DIN/ 17175/ 10CrMo910 DIN/ 17175/ 15Mo3 |
| T11 Steel Tube Sch. & Swg. | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg., 3.6 mm Thk |
| ASME SA213 Grade T11 Tubing Size | 6.35 mm OD to 101.6 mm OD |
| A213 Grade T11 Pipe Thickness | 3-12mm |
| SA213 Grade T11 Material Origin | European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material) |
| Craft | Cold rolled and Cold drawn |
| A213 Grade T11 Tube Type | Seamless / ERW / Welded / Fabricated |
| SA213 T11 Steel Tube available in Form of | Round, Square, Rectangular, Hydraulic Etc. |
| ASME SA213 Grade T11 Tube Tolerance | Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm |
| SA 213 Gr T11 Tube Length | Standard Double & In Cut length also. |
| SA213 Grade T11 Tube End | Plain End, Beveled End, Treaded |
| A213 Grade T11 Additional Testing | NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc. |
| Specialized in |
|
| SA 213 Gr T11 Tube Application & uses | Seamless Ferritic Alloy Steel Tube for High-Temperature Service |
| Grade | C≤ | Mn | P≤ | S≤ | Si≤ | Mo |
|---|---|---|---|---|---|---|
| SA213 T11 Composition | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50~1.0 | 0.44~0.65 |
| Grade | SA 213 T11 Tensile Strength, MPa | Yield Strength, MPa |
|---|---|---|
| T11 | 415 min | 205 min |
| SA 213 Gr T11 Density | Elongation, % | Hardness, HB |
| 7.85 g/cc | 30 min | 179 max |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| Outside Diameter | OD Tolerance | WT Tolerance | Ovality Tolerance | Cut Length Tolerance |
| OD≤ 12, 7 mm | ± 0, 13 mm | ± 15 % | – | + 3, 18 mm, – 0 mm |
| 12, 7 mm < OD ≤ 38, 1 mm | ± 0, 13 mm | ± 10 % | max, 1, 65 mm | + 3, 18 mm, – 0 mm |
| 38, 1 mm < OD ≤ 88, 9 mm | ± 0, 25 mm | ± 10 % | max, 2, 41 mm | + 4, 76 mm, – 0 mm |
Marzouk Steel is a leading manufacturer and distributor of high-quality Alloy Steel T11 Tubing in Tunis, Tunisia. We provide premium steel materials and a comprehensive range of products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel. Our extensive inventory features Tubes, Pipes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Dedicated to timely delivery and exceptional customer service, we use only the finest raw materials to ensure superior performance in industrial applications with stringent requirements. Contact us today for all your Alloy Steel T11 Tubing needs!
Alloy Steel T11 Tubing is widely used in industries requiring strength, durability, and thermal resistance. It is commonly applied in boilers, heat exchangers, high-pressure pipelines, and components of power plants, petrochemical facilities, and heavy industrial machinery. T11 tubing is engineered to withstand extreme temperatures, high pressures, and repeated stress while maintaining structural integrity and reliable performance. Engineers and fabricators rely on T11 tubing for critical applications where safety, efficiency, and long-term reliability are essential. Its combination of toughness, thermal stability, and mechanical strength ensures dependable operation in demanding industrial and mechanical systems.
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.
Copyright 2025 Marzouk Steel. All rights reserved
