Marzouk Steel, located in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Alloy Steel P1 pipes. These pipes are celebrated for their durability, strength, and ability to perform well under high temperatures, all while adhering to international standards for critical industrial uses. Thanks to cutting-edge manufacturing techniques, careful alloy management, and rigorous quality checks, Marzouk Steel guarantees consistent quality and a long lifespan for their products. They cater to various sectors, including power generation, petrochemicals, oil and gas, and refineries, providing Alloy Steel P1 pipes that are engineered to handle high pressure, thermal stress, and tough operating conditions.
The Alloy Steel P1 pipes are crafted from a chromium-molybdenum alloy steel that contains about 0.5% chromium and 0.5% molybdenum. These pipes boast impressive mechanical properties, with a tensile strength ranging from 415 to 585 MPa, yield strength between 205 and 310 MPa, and an elongation of 20 to 30%. After undergoing heat treatment to enhance their strength and thermal stability, Alloy Steel P1 pipes demonstrate excellent resistance to oxidation, creep, and thermal fatigue, ensuring they perform reliably in high-temperature settings.
| Alloy Steel P1 pipe Size | 1/2” NB to 36” NB |
| P1 Grade Steel Pipe Standard | ASTM A335 P1, SA335 P1 (with IBR Test Certificate) |
| ASTM A335 P1 Alloy Steel Pipe Schedules | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
| SA335 P1 Pipe Thickness | 3-12mm |
| ASTM A335 P1 Pipes Tolerance | Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm |
| ASTM A335 GR P1 Pipes Type | Seamless / ERW / Welded / Fabricated |
| Craft | Cold rolled and Cold drawn |
| UNS K11522 Pipes Length | Standard Double & In Cut length also. |
| ASTM A335 P1 Pipes available in Form of | Round, Square, Rectangular, Hydraulic Etc. |
| Specialized in | Large Diameter ASTM A335 P1 Pipe |
| Sa335 Grade P1 Pipe End | Plain End, Beveled End, Treaded |
| Application | Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
| Additional Testing | NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc. |
| Alloy Steel P1 | C | Cr | S | Si | Mn | Mo | P |
| 0.05 – 0.15 | 1.00 – 1.50 | 0.025 max | 0.50 – 1.00 | 0.30 – 0.60 | 0.44 – 0.65 | 0.025 max |
| Tensile Strength, MPa | Yield Strength, MPa | Elongation |
| 415 min | 205 min | 30 min |
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 major manufacturer and a supplier of premium Alloy Steel P1 pipe in Tunis, the Tunisia. With specialization in steel solutions, we offer a variety of products including carbon steel, alloy steel, light steel and galvanized steel. Our wide bearing has pipes, pipes, flanges, pipe fittings, forged fittings, sheets and plates. We are famous for our reliable distribution and extraordinary customer service, and are committed to offering high quality steel materials that ensure durability and better performance in different industrial applications. We are committed to skill, and we are your reliable partners for all steel requirements.
| ASTM | ASME | JIS G 3458 | UNS | BS | DIN | ISO | ABS | NK |
| A335 P1 | SA335 P1 | STPA 12 | K11597 | – | 17175 15Mo3 | 2604 II TS26 | ABS 6 | KSTPA 12 |
| 17177 15Mo3 | 2604 III TW26 |
| O.D.(mm) x Thickness(mm) | O.D(mm) x Thickness(mm) | O.D(mm) x Thickness(mm) |
|---|---|---|
| 38.1 x 3.2 | 57.0 x 4.9 | 76.2 x 4.0 |
| 38.1 x 4.0 | 57.0 x 6.3 | 76.2 x 5.0 |
| 38.1 x 6.3 | 57.0 x 7.9 | 76.2 x 6.3 |
| 42.4 x 3.2 | 60.3 x 3.2 | 82.5 x 4.5 |
| 42.4 x 4.0 | 60.3 x 3.6 | 88.9 x 3.2 |
| 44.5 x 3.2 | 60.3 x 5.0 | 88.9 x 3.6 |
| 44.5 x 6.3 | 63.5 x 3.2 | 88.9 x 4.0 |
| 48.3 x 3.2 | 63.5 x 3.6 | 101.6 x 3.6 |
| 48.3 x 3.6 | 63.5 x 4.0 | 101.6 x 4.5 |
| 50.8 x 4.5 | 63.5 x 6.3 | 101.6 x 6.3 |
| 51.0 x 3.2 | 63.5 x 7.9 | 114.3 x 3.6 |
| 51.0 x 3.6 | 70.0 x 3.2 | 114.3 x 5.0 |
| 51.0 x 6.3 | 70.0 x 3.6 | 139.7 x 4.0 |
| 57.0 x 3.2 | 70.0 x 6.3 | 139.7 x 5.0 |
| 57.0 x 3.6 | 76.2 x 3.6 | 139.7 x 6.3 |
| ASTM A335 P1 Pipe Size NPS | Pipe O.D. | Wall Thickness | Pipe I.D. | Weight per Foot |
| 1/2 | 0.84 | 0.109 | 0.622 | 0.85 |
| 0.147 | 0.546 | 1.09 | ||
| 0.188 | 0.464 | 1.31 | ||
| 0.294 | 0.252 | 1.72 | ||
| 3/4 | 1.05 | 0.113 | 0.824 | 1.13 |
| 0.154 | 0.742 | 1.48 | ||
| 0.219 | 0.612 | 1.95 | ||
| 0.308 | 0.434 | 2.44 | ||
| 1 | 1.315 | 0.133 | 1.049 | 1.68 |
| 0.179 | 0.957 | 2.17 | ||
| 0.250 | 0.815 | 2.85 | ||
| 0.358 | 0.599 | 3.66 | ||
| 1 1/4 | 1.66 | 0.140 | 1.380 | 2.27 |
| 0.191 | 1.278 | 3.00 | ||
| 0.250 | 1.160 | 3.77 | ||
| 0.382 | 0.896 | 5.22 | ||
| 1 1/2 | 1.90 | 0.145 | 1.610 | 2.72 |
| 0.200 | 1.500 | 3.63 | ||
| 0.281 | 1.338 | 4.86 | ||
| 0.400 | 1.100 | 6.41 | ||
| 2 | 2.375 | 0.109 | 2.157 | 2.64 |
| 0.154 | 2.067 | 3.66 | ||
| 0.218 | 1.939 | 5.03 | ||
| 0.250 | 1.875 | 5.68 | ||
| 0.281 | 1.813 | 6.29 | ||
| 0.344 | 1.687 | 7.47 | ||
| 0.436 | 1.503 | 9.04 | ||
| 2 1/2 | 2.875 | 0.120 | 2.635 | 3.53 |
| 0.203 | 2.469 | 5.80 | ||
| 0.216 | 2.443 | 6.14 | ||
| 0.250 | 2.375 | 7.02 | ||
| 0.276 | 2.323 | 7.67 | ||
| 0.375 | 2.125 | 10.02 | ||
| 0.552 | 1.771 | 13.71 |
These pipes find extensive use in power plants, refineries, petrochemical facilities, and oil and gas operations. They are particularly suited for applications like steam lines, boiler tubes, heat exchangers, and pressure piping systems that operate at elevated temperatures. With their robust strength, thermal resistance, and durability, Alloy Steel P1 pipes significantly improve system safety and efficiency. Engineers and plant operators trust these pipes for dependable performance in moderate to high-temperature and pressure applications that demand long-term reliability.
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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