- sales@liampipes.us
- Houston , USA
Home > Alloy Steel > Alloy Steel P91 Pipes
Providing top-notch piping solutions for high-temperature and high-pressure applications, Liam Pipes and Tubes is a reputable manufacturer and supplier of Alloy Steel P91 Pipes in Houston, USA. The high-strength chromium-molybdenum-vanadium alloy used to make P91 pipes, which are engineered in accordance with ASTM A335 standards, is renowned for its remarkable oxidation resistance, creep resistance, and thermal stability. These pipes are perfect for use in critical service settings and contemporary power plants. To satisfy particular project needs, we provide P91 pipes in a range of sizes, wall thicknesses, and custom lengths. Liam Pipes and Tubes guarantees dependability, longevity, and timely delivery each and every time.
Carbon (0.08–0.12%), manganese (0.30–0.60%), chromium (8.00–9.50%), molybdenum (0.85–1.05%), vanadium (0.18–0.25%), nickel, phosphorus, sulphur, and nitrogen are all present in trace amounts in alloy steel P91 pipes. At high temperatures, this alloy offers exceptional toughness, oxidation resistance, and creep strength. P91 pipes have a yield strength of at least 415 MPa and a tensile strength of 585–760 MPa. Long-term high-stress service conditions are perfect for these pipes because of their exceptional hardness and elongation qualities, which are intended to preserve structural integrity and dimensional stability in thermal cycling environments.
| ASTM A335 Alloy Steel P91 Pipe Size | : | 1/8NB TO 24NB IN |
| Alloy Steel ASTM A335 P91 Standards | : | ASTM A 335, ASME SA 335, UNS K11522 |
| ASTM A335 P91 Alloy Steel Pipe Type | : | Seamless |
| ASTM A335 Alloy Steel P91 Specialized in | : | Large Diameter Size |
| ASTM A335 Alloy Steel P91 Pipe Outer Dimensions | : | 19.05 – 114.3mm |
| Alloy Steel ASTM A335 P91 Pipe Wall Thickness | : | 2.0 – 14 mm |
| Alloy Steel ASTM A335 P91 Pipe Suppliers Length | : | max 16000mm |
| ASME SA335 P91 Alloy Steel Pipe Schedule | : | Schedule 20 – Schedule XXS (heavier on request) up to 250 thk. |
| ASTM A335 Alloy Steel Pipe Form | : | Round, Square, Rectangular, Hydraulic Etc. |
| Alloy Steel ASTM A335 P91 Pipe Length | : | Single Random, Double Random & Cut Length. |
| ASTM A335 P91 Pipe End | : | Plain End, Beveled End, Treaded |
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % | V, % | N, % | Ni, % | Al, % | Nb, % |
| 0.08-0.12 | 0.3-0.6 | 0.02 max | 0.01 max | 0.2-0.5 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.03-0.07 | 0.4 max | 0.04 max | 0.06-0.10 |
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 585 min | 415 min | 20 min | 250 max |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Alloy Steel P91 pipes from Liam Pipes and Tubes ensures you receive high-quality products that meet industry standards. Our pipes are manufactured using advanced techniques and stringent quality control processes, ensuring exceptional durability and performance. We offer a diverse range of sizes and specifications to suit various applications, particularly in the power generation and petrochemical sectors. Our commitment to timely delivery and excellent customer service means you can rely on us as your trusted supplier for all your alloy steel pipe needs. Experience the difference with Liam Pipes and Tubes, where quality and reliability are our top priorities.
Liam Pipes and Tubes, one of the largest suppliers of Alloy Steel P91 Pipes in Houston , USA, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
Yes, we offer custom sizes for Alloy Steel P91 Pipes to meet your specific requirements. Our team at Liam Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@liampipes.us.
High-temperature, high-pressure applications like superheaters, reheaters, headers, steam piping, and pressure vessels in power plants—particularly ultra-supercritical and supercritical systems—frequently use alloy steel P91 pipes. They are perfect for long-term use in refinery units, heat exchangers, and boilers due to their exceptional creep strength and thermal resistance. Additionally, P91 pipes are used in chemical and petrochemical facilities, where they are subjected to high temperatures and mechanical strains. They are a popular option for crucial applications in the contemporary energy and process industries because of their strong mechanical performance and resistance to oxidation, which guarantee operational safety and efficiency in challenging conditions.
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