Ferdi Fittings manufactures and supplies Alloy Steel WP9 Buttweld Fittings in Istanbul, Turkey. These fittings are designed for superior creep resistance, high-temperature strength, and oxidation protection. WP9 is a chromium-molybdenum alloy widely used in critical piping systems where durability and thermal stress resistance are crucial. Ferdi Fittings strictly follows ASTM and ASME standards, providing precision-engineered fittings with excellent dimensional accuracy and strength. Available in various dimensions and forms, WP9 buttweld fittings are trusted in industries needing safe and long-lasting piping solutions. Their reliable performance serves clients globally in the oil, gas, petrochemical, and power generation sectors.
| 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 WP9 contains around 8–10% chromium and 0.9–1.1% molybdenum, with balanced amounts of carbon, manganese, silicon, and trace phosphorus and sulfur. Chromium improves scaling resistance, while molybdenum enhances tensile and creep strength. WP9 fittings show tensile strength of about 585 MPa, yield strength of 380 MPa, elongation of at least 20%, and excellent hardness. They maintain toughness during extended service at high temperatures. This alloy offers thermal stability, oxidation resistance, and reliable performance under stress, making WP9 ideal for buttweld fittings in high-pressure and heat-intensive environments.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP9 | ≤0.15 | ≤0.6 | 1.00 | ≤0.03 | ≤0.03 | 8-10 | 0.99-1.10 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP9 | 380 min | 585 min | ≥30 |
Ferdi Fittings one of the largest suppliers of Alloy Steel WP9 Buttweld Fittings in Istanbul, Turkey. 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 WP9 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 WP9 Buttweld Fittings in the Turkey.
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 WP9 Buttweld Fittings from Ferdi 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.
| NPS (Normal Pipe Size) | O.D. (Outside Daimeter) | Elbow 90 Deg | Elbow 45 Deg | Return Elbow 180 Deg | ||||
| (inch) | Long Radius Elbow | Short Radius | Long Radius Elbow | Long Radius Elbow | ||||
| (millimeter/ MM) | (inch./ Inches) | Center to Face (Inches) | Center to Face (Inches) | Center to Face (Inches) | Radius (Inches) | Center to Center (Inches) | Back to face (Inches) | |
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Alloy Steel WP9 Buttweld Fittings offer several advantages, making them ideal for high-temperature and high-pressure applications. Their composition, featuring chromium and molybdenum, enhances their resistance to oxidation, corrosion, and wear, ensuring long-lasting performance. WP9 Fittings are highly durable, with excellent strength and weldability, making them suitable for demanding industries such as power generation, petrochemical, and oil & gas. They provide superior resistance to thermal fatigue and carburization, ensuring the integrity of piping systems under extreme conditions. Additionally, they offer ease of installation and minimal maintenance over time.
| Pressure-Temperature ratings for ASME B16.9 ASTM A234 WP9 Pipe Fittings(psig) | |||||
| Temperature Ratings | Pressure Class | ||||
| 150 | 300 | ||||
| 1/4 – 1 Inches | 1 1/4 – 2 Inches | 2 1/2 – 3 Inches | |||
| (oF) | (oC) | ||||
| -20 to 150 | -29 to 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | – | 935 | 750 | 560 |
| 450 | 232 | – | 725 | 600 | 475 |
| 500 | 260 | – | 510 | 450 | 385 |
| 550 | 288 | – | 300 | 300 | 300 |
Yes, custom sizes are available for Alloy Steel WP9 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@ferdifittings.com.
Alloy Steel WP9 Buttweld Fittings are extensively used in thermal power plants, boilers, petrochemical refineries, and high-pressure steam systems. They are essential for superheaters, reheaters, heat exchangers, and turbine piping. WP9’s resistance to thermal fatigue ensures reliable service in cyclic heating environments. In refineries, they are used in piping systems for transporting hot gases and steam. Offshore industries prefer WP9 fittings for their durability in challenging pressure and temperature conditions. Their excellent resistance to creep and stress-rupture makes them a top choice in long-term, high-temperature service applications.
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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