Nguyen Fittings and Plates, with its presence in Da Nang, Vietnam, is a reliable producer of precision-engineered Alloy Steel WP1 Pipe Fittings, suitable for industrial environments with moderate temperatures. Designed in compliance with ASTM A234 WP1 and ASME B16.9, these fittings—elbows, tees, reducers, caps—are forged and heat-treated for strength and dimensional accuracy. Our manufacturing provides consistent quality, tight tolerances, and surface smoothness. Perfect for thermal, water, and oil processing systems, WP1 fittings are an economical option for stable, long-lasting performance in a broad range of industrial applications.
| 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 | |
WP1 alloy steel is a low-alloy type with about 1% chromium, 0.5% molybdenum, balanced carbon and manganese. It has tensile strength of about 485–620 MPa and yield strength of about 310 MPa. Heat treatment, e.g., normalizing, enhances its toughness, resistance to stress, and dimensional stability. WP1 fittings show good resistance to moderate temperatures up to ~425 °C, weldability, durability, and fatigue life, rendering them suitable for a wide range of thermal and pressure conditions.
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP1 | 0.28 max | 0.30- 0.90 | 0.10- 0.50 | 0.045 max | 0.045 max | – | 0.044-0.65 max |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP1 | 220 min | 415 min | 20 |
Nguyen Fittings is a leading supplier of Alloy Steel WP1 Pipe Fittings in Da Nang, Vietnam. We offer an extensive range of Alloy Steel WP1 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 WP1 Pipe 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 WP1 Pipe Fittings offer excellent strength and durability, making them ideal for high-pressure and high-temperature applications. Their corrosion resistance ensures longevity in harsh environments, including chemical processing and power plants. These fittings provide thermal stability and resistance to oxidation, ensuring reliable performance under fluctuating temperatures. With superior weldability and machinability, they facilitate efficient installation and customization. Their cost-effectiveness and versatility make them suitable for diverse industries such as oil and gas, petrochemicals, and refineries. Additionally, they exhibit dimensional accuracy, ensuring leak-proof connections and enhanced system efficiency.
| 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 WP1 Pipe Fittings are available at Nguyen Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@nguyenfittings.com.
Alloy Steel WP1 pipe fittings perform effectively in boiler systems, steam lines, heat exchangers, power plants, and industrial piping with moderately high temperatures. They are used extensively in water treatment plants, district heating, oil and gas distribution, and industrial HVAC systems. They are capable of providing consistent performance in thermal cycling and moderate pressure. WP1’s combination of strength, thermal resistance, and cost-effectiveness makes it an industrial facility’s go-to option for reliable fittings that are both within performance and budget limitations.
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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