Nguyen Fittings and Plates is a well-known producer of Alloy Steel WP91 Buttweld Fittings, offering high-performance options for pressure piping and high-temperature use. These fittings meet ASTM A234 WP91 and ASME B16.9 standards, making them perfect for power plants, refineries, and steam generation systems. WP91 has excellent creep resistance and thermal stability, allowing it to handle service temperatures up to 650°C. Nguyen provides elbows, tees, reducers, and caps with precise dimensions and strong metallurgical integrity, ensuring reliability, strength, and long life in tough conditions.
| Specifications | : | ASTM A234 / ASME SA234 |
| Size | : | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Standards | : | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Thickness | : | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Type | : | Seamless / Welded / Fabricated |
Alloy Steel WP91 is a 9% chromium, 1% molybdenum, vanadium-modified steel with niobium and nitrogen. This mix offers a tensile strength of 585–760 MPa and a yield strength of at least 415 MPa. The alloy has great creep strength, oxidation resistance, and maintains its structure under prolonged high temperatures. It is heat-treated for hardness and ductility, resulting in exceptional weldability and resistance to thermal fatigue. This makes it a popular choice for high-pressure, high-temperature piping applications.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP91 | 0.08-0.12 | 0.3-0.6 | 0.2-0.5 | ≤0.02 | ≤0.015 | 8-9.5 | 0.85-1.05 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP91 | ≥590 | ≥415 | ≥20 |
Nguyen Fittings one of the largest suppliers of Alloy Steel WP91 Buttweld Fittings in Da Nang, Vietnam. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Alloy Steel WP91 is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Alloy Steel WP91 Buttweld Fittings in the Vietnam.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Alloy Steel WP91 Buttweld Fittings from Nguyen Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
Alloy Steel WP91 Buttweld Fittings offer numerous advantages, especially in high-temperature and high-pressure applications. Their composition, featuring chromium and molybdenum, provides outstanding resistance to oxidation, corrosion, and thermal fatigue. WP91 fittings are known for their excellent weldability, strength, and durability, ensuring long-term performance in demanding industries like power generation, petrochemical, and oil & gas. They maintain structural integrity even under extreme conditions, reducing the risk of failure. Additionally, WP91 Fittings require minimal maintenance and offer cost-effective solutions due to their longevity, making them a reliable choice for critical systems in challenging environments.
Yes, custom sizes are available for Alloy Steel WP91 Buttweld Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@nguyenfittings.com.
WP91 buttweld fittings are widely used in thermal power plants, superheater coils, steam headers, and boiler components. They excel in systems that transport high-pressure steam, hot water, and hydrocarbon fluids. Their strength-to-weight ratio and thermal endurance are critical in nuclear, fossil fuel power plants, chemical refineries, and heat recovery systems. WP91 is also found in petrochemical pipelines and industrial furnaces, enhancing safety, reliability, and reducing maintenance in long-term high-temperature operations.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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