Yousef Steel is a reputable manufacturer and supplier of **Alloy Steel P1 Pipes** based in Riyadh, Saudi Arabia. We pride ourselves on delivering high-quality pipes that are built to last, offering exceptional durability, corrosion resistance, and mechanical strength. Our pipes are crafted to meet international alloy steel standards, ensuring they perform reliably in critical applications like power generation, petrochemical industries, and high-pressure piping systems. At Yousef Steel, we emphasize precision manufacturing, rigorous quality control, and adherence to global specifications, making our Alloy Steel P1 Pipes ideal for even the most demanding industrial settings.
These pipes are made from a blend of carbon, manganese, chromium, and other alloying elements, all designed to boost strength, hardness, and resistance to corrosion. They typically provide impressive tensile and yield strength, along with outstanding toughness, making them perfect for high-pressure and high-temperature applications. The carefully controlled chemical composition guarantees excellent weldability, machinability, and long-lasting durability. We offer these pipes in both seamless and welded forms, with a variety of diameters and wall thicknesses to suit your specific project needs.
| 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.
Yousef Steel is a major manufacturer and a supplier of premium Alloy Steel P1 pipe in Riyadh, the Saudi Arabia. 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 |
Alloy Steel P1 Pipes are extensively utilized in power plants, petrochemical refineries, and the oil and gas processing sectors for transporting steam, water, oil, and other fluids under high pressure. They’re also essential in industrial piping systems, chemical plants, and heavy machinery that require strong, corrosion-resistant piping solutions. With their superior mechanical performance, wear resistance, and compliance with international standards, Alloy Steel P1 Pipes are the go-to choice for industries looking for dependable and durable piping systems.
Yousef 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 Riyadh, Saudi Arabia.
Copyright 2025 Yousef Steel. All rights reserved
