Phanuphong Steel and Plates is a well-respected manufacturer and supplier of top-notch Alloy Steel F91 Forged Fittings, based in Bangkok, Thailand. We pride ourselves on our commitment to quality, durability, and high-performance engineering, providing forged fittings that meet the rigorous demands of industries like power generation, oil & gas, petrochemicals, and refineries. Our F91 forged fittings are crafted to meet ASTM and ASME standards, ensuring they deliver exceptional mechanical strength and can withstand high temperatures and pressures. With our advanced production capabilities and dependable customer service, Phanuphong Steel guarantees timely delivery and technical support for both local and international industrial projects.
Alloy Steel F91 Forged Fittings are produced according to ASTM A182 standards and consist of 9% Chromium and 1% Molybdenum, along with Vanadium, Niobium, and Nitrogen. This unique blend gives them remarkable strength, creep resistance, and protection against corrosion in high-temperature settings. Their mechanical properties boast a minimum tensile strength of 585 MPa and a yield strength of 415 MPa, along with excellent resistance to thermal fatigue and oxidation. The tempered martensitic structure of F91 enhances both hardness and stability, making these fittings perfect for critical applications that involve thermal cycling, high pressure, and prolonged exposure to elevated temperatures.
Designation : ASTM / ASME A182 GR F91 |
Dimensions : ASME 16.11, MSS SP-79,83,95,97,BS 3799 |
Range : 1/8” – 4” (DN6-DN100) |
Types : Socket Weld Fittings, Screwed-Threaded Fittings |
Class : 2000LBS, 3000LBS, 6000LBS |
Form : Elbow 45 Deg & 90 Deg, Tee, Cross, Cap, Full Coupling, Half Coupling, Union, Bushing, Swage Nipple, Plug |
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A182 F91 | 0.08 – 0.12 | 0.3 – 0.6 | 0.5 | 0.01 | 0.02 | 8.5 – 9.5 | 0.85 – 1.05 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A182 F91 | 415 | 585 | 20 |
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 F91 Forged Fittings find their place in high-temperature and high-pressure piping systems where outstanding mechanical and thermal performance is crucial. They are commonly used in boiler and superheater systems, steam lines, power plant piping, and pressure vessels in ultra-supercritical and supercritical environments. Additionally, you’ll find them in oil refineries, chemical plants, and thermal processing industries. Forged elbows, tees, couplings, and reducers are just a few examples of the fittings that play a vital role in these applications.
Phanuphong 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 Bangkok, Thailand.
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