A top producer and supplier of premium Alloy Steel WP9 Pipe Fittings for use in high-pressure and moderate-to-high temperature industrial applications, Harry Fittings is situated in Houston, USA. Our WP9 fittings provide outstanding strength, corrosion resistance, and dimensional accuracy by using premium alloy steel materials and sophisticated forging techniques. We provide a large range of fittings, such as elbows, tees, reducers, and caps, that are manufactured in compliance with ASTM A234 and ASME B16.9 standards. Serving vital industries like power generation, petrochemicals, and oil and gas, Harry Fittings guarantees dependable, long-lasting products with timely delivery and first-rate customer service.
| Specifications | ASTM A234 / ASME SA234 |
|---|---|
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Size | Seamless Fittings: 1/2″ – 10″ Welded Fittings: 1/2″ – 48″ |
| Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| Manufacturing Standards | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 DIN : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, DN15-DN1200 BS : BS4504, BS4504, BS1560, BS10 JIS : JIS B2311, JIS B2312, JIS B2313, JIS B2316 GOST : GOST 17375, GOST 17376, GOST 30753, GOST 17378, GOST 17379, GOST 17380 EN: EN10253-1, EN10253-2 |
| Types | Seamless / ERW / Welded / Fabricated |
| Connection | Welding |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Elbow | Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO |
| Manufacturing process | Push, Press, Forge, Cast, etc. |
| Specialized manufacturer of | 90º Elbows, Couplings, Reducers, Inserts, Caps, Nipples, 45º Elbows, Tees, Crosses, Equal Tees & Reducing Tees |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Chromium (about 0.9%) and molybdenum (about 0.5%) make up the majority of alloy steel WP9 pipe fittings, with carbon, manganese, silicon, phosphorus, and sulphur being added as supplements. Excellent resistance to oxidation, scaling, and thermal fatigue is conferred by the composition of this alloy. Tensile strength ranges from 415 to 620 MPa, yield strength is close to 205 MPa, and elongation is about 20% for WP9 fittings. Their mechanical qualities are improved by heat treatment, which enables them to withstand service temperatures of up to 1100°F (593°C). For optimum performance, Harry Fittings ensures that every product satisfies ASTM A234 WP9 requirements.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP9 | ≤0.15 | ≤0.6 | 1.00 | ≤0.03 | ≤0.03 | 8-10 | 0.90-1.10 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP9 | 380 min | 585 min | ≥30 |
Harry Fittings is a leading supplier of Alloy Steel WP9 Pipe Fittings in Houston, USA. We offer an extensive range of Alloy Steel WP9 Pipe Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
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 Pipe Fittings from Harry 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.
| Nominal Pipe Size | All Fittings | All Fittings | All Fittings | Elbows/ Tees | 180° Return Bends | 180° Return Bends | 180 Deg Return Bends | Reducers | Caps |
|---|---|---|---|---|---|---|---|---|---|
| NPS | O.D. at Bevel (1), (2) | I.D. at End (1), (3), (4) | Wall Thickness (3) | Centre-to-End Dimension A,B,C,M | Centre-to-Centre O | Back-to-Face K | Alignment of Ends U | Overall Length H | Overall Length E |
| ½ to 2½ | 0.06 -0.03 | 0.03 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 3 to 3 ½ | 0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 4 | 0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 5 to 8 | 0.09 -0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.25 |
| 10 to 18 | 0.16 -0.12 | 0.12 | Not less than 87.5% of nominal thickness | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 20 to 24 | 0.25 -0.19 | 0.19 | Not less than 87.5% of nominal thickness | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 26 to 30 | 0.25 -0.19 | 0.19 | Not less than 87.5% of nominal thickness | 0.12 | … | … | … | 0.19 | 0.38 |
| 32 to 48 | 0.25 -0.19 | 0.19 | Not less than 87.5% of nominal thickness | 0.19 | … | … | … | 0.19 | 0.38 |
Yes, custom sizes for Alloy Steel WP9 Pipe Fittings are available at Harry Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@harryfittings.us.
Power plants, refineries, petrochemical processing, and the oil and gas sector all use alloy steel WP9 pipe fittings extensively because these systems must withstand high temperatures and pressures. They are perfect for connecting pressure vessels, heat exchangers, boiler tubing, and steam lines. The fittings are appropriate for cyclic and continuous high-temperature service due to their exceptional resistance to corrosion and thermal stress. Critical piping infrastructures around the world are supported by Harry Fittings’ WP9 forged fittings, which guarantee leak-proof joints, structural integrity, and longevity in harsh environments.
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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