Marzouk Steel, based in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality steel products tailored for specialized industrial service conditions. One of its premium low-temperature offerings is Carbon Steel A334 Gr 8 Tubing, designed to perform reliably in cold and cryogenic environments. Manufactured in accordance with ASTM A334 standards, this tubing delivers excellent toughness, strength, and resistance to brittle fracture. Marzouk Steel follows strict quality control procedures to ensure that every A334 Gr 8 tube meets international specifications and performs safely in demanding low-temperature applications.
Carbon Steel A334 GR 8 Tubing contains mostly carbon, manganese, phosphorus, sulfur, and silicon, along with certain alloying elements that help improve its characteristics. It can contain carbon (0.30–0.60%), manganese (0.60–1.35%), and trace amounts of phosphorus and sulfur. The tubing contains good mechanical characteristics, such as a tensile strength of 415 MPa (60 ksi) and yield strength of 240 MPa (35 ksi). It also has good weldability, formability, and oxidation resistance at high temperatures, making it well suited for applications at high pressure and temperature such as heat exchangers and boilers.
| Element | A/SA 334 Gr A8 |
| C | 0.30 max |
| Mn | 0.40-1.06 |
| P | 0.025 max |
| S | 0.025 max |
| Element | A/SA 334 |
| Tensile Strength, (MPa) | 380 min |
| Yield Strength, (MPa) | 205 min |
| Elongation min. % | 35 |
| Hardness, HB | 163 max |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Marzouk Steel is a trusted manufacturer and supplier of high-quality Carbon Steel A334 GR 8 Tubing in Tunis, Tunisia. We offer 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. Committed to fast delivery and exceptional customer service, we source only the highest-grade raw materials to ensure superior strength and durability for demanding industrial applications. Contact us today for all your Carbon Steel A334 GR 8 Tubing needs!
| Outside | Nominal | Wall | Inside | Weight |
| Diameter | Pipe Diameter | Thickness | Diameter | Lbs |
| Inches | Inches | Inches | Inches | Per Foot |
| 1.660 | 1-1/4 | .140 | 1.380 | 2.273 |
| 1.315 | 1 | .133 | 1.049 | 1.679 |
| 1.900 | 1-1/2 | .145 | 1.610 | 2.718 |
| 2.875 | 2-1/2 | .203 | 2.469 | 5.793 |
| 2.375 | 2 | .154 | 2.067 | 3.653 |
| 6.625 | 6 | .28 | 6.056 | 18.97 |
| 3.50 | 3 | .216 | 3.068 | 7.576 |
| 4.50 | 4 | .237 | 4.026 | 10.79 |
| 4 | 3-1/2 | .226 | 3.548 | 9.109 |
| 5.563 | 5 | .258 | 5.047 | 14.62 |
| 8.625 | 8 | .322 | 7.981 | 28.55 |
Carbon Steel A334 GR 8 Tubing is extensively applied in the sectors where high-strength and heat-resistant material is needed. It finds its main applications in heat exchangers, boilers, pressure vessels, and piping systems of power plants, chemical processing, and petroleum refineries. The superior mechanical properties of the tubing, such as high tensile strength and resistance to oxidation, make it ideal for the transportation of fluids and gases under high temperature conditions. The tubing is also utilized in the manufacture of steam lines, condensers, and other significant components that operate under high-pressure and thermal stress. The tubing is responsible for providing efficient and durable performance in such extreme conditions.
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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