Socket Weld Flanges are a highly reliable type of pipe flange used in critical piping systems where leak-proof connections and structural integrity are essential. These flanges are designed with a recessed area where the pipe is inserted and then fillet welded around the hub, creating a strong joint with excellent fatigue resistance. Unlike slip-on flanges, socket weld flanges are preferred for smaller-diameter, high-pressure piping systems because of their enhanced strength and ability to handle stress without compromising safety. They are widely utilized in industries such as oil and gas, petrochemicals, refineries, shipbuilding, pharmaceuticals, power plants, and water treatment facilities.
One of the key advantages of socket weld flanges is their ability to provide a smooth bore after welding and grinding, reducing turbulence and minimizing pressure drop within the pipeline. They are most effective in applications involving fluids, gases, or chemicals under medium to high pressure. Socket weld flanges are manufactured in accordance with international standards such as ASME B16.5, ASTM, DIN, EN, BS, and ANSI specifications, ensuring compatibility with global piping systems.
At Neonox Overseas, we supply a comprehensive range of socket weld flanges in different materials to meet diverse industrial requirements. Our stainless steel socket weld flanges, available in grades such as SS 304, 304L, 304H, 316, 316L, 310, 321, and 347, offer outstanding resistance to corrosion and oxidation, making them suitable for aggressive environments. For highly corrosive applications, we also provide duplex and super duplex stainless steel socket weld flanges that deliver superior pitting and crevice corrosion resistance, particularly in seawater and chloride-rich environments.
Our range also includes carbon steel socket weld flanges, ideal for general engineering and structural applications, as well as alloy steel socket weld flanges designed for high-temperature and high-pressure conditions such as boilers, heat exchangers, and power generation equipment. For industries that demand excellent resistance to extreme conditions, we offer socket weld flanges in nickel alloys, Hastelloy, Inconel, Monel, and Titanium. These materials ensure performance even in chemical processing, marine, and aerospace sectors.
Neonox Overseas provides socket weld flanges in multiple face types including Raised Face (RF), Flat Face (FF), and Ring-Type Joint (RTJ), covering sizes from ½” to 24” with pressure ratings ranging from Class 150 to Class 2500 (PN6 to PN400). We offer customization in dimensions, finishes, and coatings such as galvanized, epoxy-coated, or PTFE-lined flanges to meet project-specific needs.
With strict quality control, advanced manufacturing facilities, and compliance with ASTM, ASME, API, DIN, and BS standards, Neonox Overseas ensures that every socket weld flange delivered meets international benchmarks of durability, accuracy, and performance. Whether your requirement is for standard piping projects or highly specialized applications, our socket weld flanges provide reliability, safety, and long-term service life.
| Specification | Details |
|---|---|
| Size Range | ½” to 24” (DN15 to DN600) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 / PN6 – PN400 |
| Face Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Standards | ASME B16.5, ASTM, ANSI, DIN, BS, EN, JIS |
| Materials |
Stainless Steel: 304, 304L, 304H, 316, 316L, 310, 321, 347, 904L Carbon Steel: ASTM A105, A350 LF2, IS 2062 Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91 Duplex Steel: UNS S31803, S32205 Super Duplex Steel: UNS S32750, S32760 Nickel Alloys: Inconel 600, 625, 800, 825; Monel 400, K500; Hastelloy C22, C276; Nickel 200, 201 Titanium: Gr.2, Gr.5 Copper Alloys: Cu-Ni 70/30, Cu-Ni 90/10 Special Alloys: SMO 254, Alloy 20 |
| Dimensions | ANSI/ASME/DIN Standard Dimensions, Custom on Request |
| Surface Finish | Rust Oil, Black Paint, Anti-Rust Coated, Galvanized, Epoxy Coated, PTFE Lined |
| Applications | Oil & Gas, Petrochemicals, Refineries, Marine, Chemical Processing, Power Plants, Shipbuilding, Water Treatment, Pharmaceuticals |
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