At Esha Steel, we proudly supply high-quality Alloy Steel WP91 Pipe Fittings to industries across Kolkata and nationwide. Manufactured to ASTM and ASME standards, these fittings are engineered for high-pressure and high-temperature applications, ensuring reliable performance and long-term durability. Esha Steel emphasizes precision, strict quality control, and superior mechanical properties. Trusted by power generation, petrochemical, and industrial sectors, WP91 pipe fittings provide excellent creep resistance, toughness, and weldability, making them ideal for connecting and directing critical piping systems in demanding industrial environments.
Alloy Steel WP91 Pipe Fittings are made from chromium-molybdenum-vanadium alloy steel with controlled carbon, manganese, phosphorus, sulfur, and silicon content. This composition provides exceptional high-temperature strength, creep resistance, and toughness. Mechanically, WP91 fittings offer tensile strength of 585–760 MPa, yield strength of 415–620 MPa, and good elongation with excellent impact resistance. Heat treatment enhances hardness, dimensional stability, and high-temperature performance. Their uniform microstructure ensures reliable weldability, machinability, and mechanical stability, making WP91 pipe fittings ideal for high-pressure, high-temperature industrial piping systems.
Specifications : ASTM A234 / ASME SA234
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type : Seamless / Welded / Fabricated
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A234 WP91 | 0.08-0.12 | 0.3-0.6 | 0.2-0.5 | ≤0.02 | ≤0.015 | 8-9.5 | 0.85-1 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A234 WP91 | ≥590 | ≥415 | ≥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 WP91 Pipe Fittings are widely used in high-pressure steam lines, boilers, power plants, petrochemical refineries, and industrial piping systems. They are suitable for elbows, tees, reducers, and other fittings that operate under high temperatures and pressures. WP91 fittings are ideal for thermal power generation, chemical processing, and high-temperature fluid transport where creep resistance, toughness, and reliability are essential. With excellent weldability, mechanical strength, and dimensional stability, WP91 pipe fittings ensure safe, efficient, and long-lasting operation. Engineers and fabricators rely on them for durable, high-performance connections in critical, high-pressure industrial applications.
Esha 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 Kolkata India.
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