Marzouk Steel, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality steel products designed for specialized service conditions. One of its advanced low-temperature offerings is Carbon Steel A334 Gr 9 Tubing, developed to perform reliably in cold and sub-zero environments. Manufactured in accordance with ASTM A334 standards, this tubing provides excellent toughness, strength, and resistance to brittle fracture. Marzouk Steel applies strict quality control at every stage of production, ensuring A334 Gr 9 tubing meets international standards and delivers dependable performance in critical low-temperature industrial applications.
Carbon Steel A334 Gr 9 Tubing is produced from high-quality alloyed carbon steel containing controlled amounts of carbon, manganese, phosphorus, sulfur, and nickel. The nickel content enhances low-temperature toughness and impact resistance. This grade offers good tensile and yield strength, uniform wall thickness, and strong resistance to thermal stress. The tubing maintains stable mechanical properties and structural integrity even under sub-zero temperature and moderate-pressure conditions.
| Element | A/SA 334 Gr A9 |
| 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 leading manufacturer and supplier of Carbon Steel A334 GR 8 Tubing in Tunis, Tunisia. We provide top-quality steel materials and a wide range of products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel. Our extensive inventory consists of Tubes, Pipes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. With a strong commitment to fast delivery and exceptional customer service, we ensure that all our products are made from the finest raw materials, guaranteeing superior strength, durability, and performance for demanding industrial applications. Get in touch with us today for your Carbon Steel A334 GR 8 Tubing requirements!
| 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 9 Tubing is widely used in cryogenic and low-temperature service applications such as LNG plants, gas transmission pipelines, cold-climate processing facilities, and refrigeration systems. It is suitable for transporting gases, liquids, and hydrocarbons where resistance to brittle failure is critical. The tubing is also used in petrochemical plants and refineries operating in cold environments. Engineers and operators prefer A334 Gr 9 tubing for its enhanced toughness, durability, and long service life under extreme temperature 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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