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A Socket Weld Flange is a type of pipe flange designed for small-diameter, high-pressure piping systems. It features a recessed socket where the pipe is inserted before being secured with a fillet weld around the outer joint. This design provides a leak-proof and structurally strong connection, ideal for applications where precision and durability are essential.
Manufactured from high-quality materials such as carbon steel, stainless steel, and alloy steels, socket weld flanges offer excellent corrosion resistance and can withstand high pressure and high temperature conditions. These flanges are commonly used in oil & gas, petrochemical, power generation, and refinery industries.
Socket weld flanges are available in various pressure classes such as Class 150, 300, 600, and up to 1500, depending on the project requirements. Their compact design, along with superior vibration and fatigue resistance, makes them a preferred choice for critical piping systems where reliable, long-term performance is essential.
| Specification | Details |
|---|---|
| Product | Socket Weld Flanges |
| Size Range | 1/2" to 2" (DN15 to DN50) – Custom sizes available |
| Pressure Ratings | Class 150, 300, 600, 900, 1500 (As per ASME B16.5) |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) – on request |
| Wall Thickness | As per Schedule 40, 80, 160 or custom specifications |
| Standards | ASME B16.5, ASME B16.11, ASTM A105, ASTM A182, MSS-SP-44, ISO 9001, EN 1092 (on request) |
| Material Grades |
Carbon Steel: ASTM A105, A350 LF2 Stainless Steel: 304, 304L, 316, 316L Alloy Steel: ASTM A182 F1, F11, F22 Duplex Steel: UNS S31803, S32205 Nickel Alloys: Inconel 600/625, Monel 400, Hastelloy C276 |
| Manufacturing Process | Forged, Heat Treated, Machined |
| Ends | Socket Weld (Recessed socket for pipe insertion, fillet weld applied) |
| Surface Finish | Black Painted, Anti-Rust Coated, Pickled, Polished, Sand Blasted |
| Testing & Certification | Hydrostatic Test, NDT (UT, RT, MT), PMI, Hardness Testing, TPI Inspection, Mill Test Certificates (EN 10204 3.1 / 3.2) |
| Applications | Oil & Gas, Petrochemical, Power Generation, Refining, Marine, Chemical Processing, High-Pressure Steam, HVAC Systems |
| Special Features | Compact Design, High-Pressure Handling, Easy Installation, Leak-Proof Seal, Corrosion Resistance, Durable Performance |
| Socket Weld Flange Design Features |
Secure Pipe Fit: Recessed socket allows pipe to sit accurately for fillet
welding. Leak-Proof Joint: Socket weld and fillet weld provide excellent sealing against leaks. Compact Footprint: Ideal for limited-space and small-diameter piping systems. High Strength: Forged construction enables superior mechanical and pressure performance. Standards Compliant: Manufactured per ASME, ASTM, and ISO guidelines for quality assurance. |
Our Socket Weld Flanges are engineered for high-pressure and small-diameter piping systems, offering leak-proof connections, compact design, and easy alignment — ideal for critical industrial applications.
Socket weld flanges offer a tight and reliable seal when used with fillet welds, preventing leakage in high-pressure systems and ensuring secure pipe connections.
With their small face-to-face dimensions, socket weld flanges are perfect for tight-space installations in small bore piping systems, especially up to 2 inches in diameter.
Forged construction ensures socket weld flanges can handle medium to high-pressure environments, with enhanced fatigue resistance compared to threaded flanges.
Manufactured in accordance with ASME B16.5, ANSI, and MSS-SP standards, ensuring dimensional accuracy and international compatibility.
Socket weld flanges allow precise pipe positioning before welding, simplifying the installation process and ensuring clean internal bore alignment.
Widely used in oil & gas, petrochemical, chemical processing, power plants, and shipbuilding, these flanges are trusted in critical high-pressure applications.