Marzouk Steel, headquartered in Tunis, Tunisia, is a leading manufacturer and supplier of high-quality steel products, serving industries that demand strength, durability, and precision. Among its specialized offerings are Alloy Steel F91 Forged Fittings, engineered for high-pressure, high-temperature, and critical mechanical applications. Manufactured with advanced forging techniques and stringent quality control, F91 forged fittings provide exceptional strength, toughness, and corrosion resistance. Marzouk Steel ensures that every F91 fitting meets international standards, offering engineers and fabricators reliable solutions for petrochemical, power generation, oil and gas, and heavy industrial piping systems.
Alloy Steel F91 Forged Fittings are made from chromium-molybdenum-vanadium (Cr-Mo-V) alloy steel, offering superior tensile strength, creep resistance, and thermal stability. The chemical composition, including carbon, chromium, molybdenum, and vanadium, enhances hardness, impact resistance, and fatigue strength. F91 forged fittings respond excellently to heat treatment, optimizing mechanical properties such as yield strength, tensile strength, and toughness. With excellent structural integrity under high-pressure and high-temperature conditions, these fittings are ideal for critical industrial, petrochemical, and power generation applications.
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 are widely used in industries requiring high-strength, durable, and reliable piping connections. They are commonly applied in ultra-supercritical boilers, heat exchangers, turbines, high-pressure pipelines, petrochemical plants, and heavy industrial machinery. Designed to withstand extreme pressure, elevated temperatures, and cyclic stress, F91 forged fittings maintain structural integrity and provide leak-proof, secure connections. Engineers and fabricators rely on these fittings for critical applications where durability, safety, and operational efficiency are essential. Their combination of toughness, thermal stability, and mechanical strength ensures dependable performance in demanding industrial environments.
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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