Marzouk Steel, based in Tunis, Tunisia, is a reliable manufacturer and supplier of quality steel products for heat-transfer and industrial applications. Among its specialized offerings is Carbon Steel A423 Gr 1 Tubing, designed for use in surface condensers and low-temperature heat exchange systems. Manufactured in accordance with ASTM A423 standards, this tubing delivers consistent performance, smooth finish, and excellent thermal conductivity. Marzouk Steel ensures strict quality control and adherence to international specifications, providing A423 Gr 1 tubing that meets the demanding requirements of power plants, process industries, and industrial condenser systems.
Carbon Steel A423 Gr 1 Tubing is manufactured from high-quality carbon steel with controlled chemical composition, including carbon, manganese, phosphorus, and sulfur. Grade 1 offers good tensile strength, ductility, and formability, making it suitable for tube bending and fabrication. The tubing provides reliable mechanical properties, uniform wall thickness, and resistance to operational stress. Its smooth internal surface ensures efficient heat transfer and stable performance in condenser and heat exchanger applications.
| Size Range | : | ½” OD to 16” OD |
| Standards | : | AASTM A 423 / ASME SA 423 |
| Grade | : | ASTM A423 GR 1 / ASME SA423 GR 1 |
| Type | : | Round, Square, Rectangle, Hydraulic, Honed Tubes |
| Length | : | Single Random, Double Random & Customize Size |
| Type | : | Weathering Steel |
| End | : | Plain End, Beveled End, Threaded End |
| Element | C, % | Mn, % | P, % | S, % | Si, % | Cu, % | Cr, % | Ni, % |
|---|---|---|---|---|---|---|---|---|
| A/SA 423 GR 1 | 0.15 max. | 0.55 max. | 0.06–0.16 | 0.060 max. | 0.10 min. | 0.20–0.60 | 0.24–1.31 | 0.20–0.70 |
| Grade | Yield Strength MPa(min) | Tensile Strength MPa | Elongation % (min) |
| Corten A | 355 | 470-630 | 20 |
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 distributor of high-quality Carbon Steel A423 GR 1 Tubing in Tunis, Tunisia. We offer premium steel materials and a wide 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 top-grade raw materials to ensure superior strength and durability for demanding industrial applications. Contact us today for all your Carbon Steel A423 GR 1 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 A423 Gr 1 Tubing is widely used in surface condensers, heat exchangers, and cooling systems operating at low temperatures and pressures. It is commonly installed in power plants, chemical processing units, refineries, and industrial cooling circuits. The tubing is suitable for applications requiring efficient heat transfer, ease of fabrication, and dependable performance. Engineers and plant operators prefer A423 Gr 1 tubing for its durability, thermal efficiency, and long service life in condenser and industrial heat exchange 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.
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