Socket Weld Flanges (SW Flanges) are a crucial component in high-pressure piping systems, widely used in industries such as oil & gas, petrochemical, and shipbuilding.
They are designed for small-diameter, high-pressure pipelines, where a strong, leak-free connection is essential.

🔩 What Is a Socket Weld Flange?

A Socket Weld Flange features a recessed socket into which the pipe is inserted before being welded around the hub.
This structure allows for a smooth bore and better fluid flow, reducing turbulence and pressure loss.

It is typically made from forged steel materials such as carbon steel, stainless steel, or alloy steel, ensuring high strength and corrosion resistance.

👉 View our full Socket Weld Flange product details here.

⚙️ Key Features and Benefits

Strong and Reliable Connection: The socket welding process creates a high-integrity joint, ideal for high-pressure conditions.

Smooth Internal Flow: The inner bore of the flange and pipe match perfectly, reducing flow restrictions.

Compact Design: Ideal for tight spaces and small-bore piping systems.

Easy Installation: Only one fillet weld is required on the outside, simplifying the assembly process.

Versatile Applications: Suitable for steam lines, oil pipelines, and industrial equipment connections.

🧱 Common Materials and Standards

Socket Weld Flanges from Cangzhou NFI Flange Co., Ltd. are manufactured according to international standards such as:

ASME B16.5 / ASTM A105 / A182

DIN / JIS / EN standards upon request

Materials include Carbon Steel, Stainless Steel, Alloy Steel, and Duplex Steel

Each product undergoes strict quality inspection, including dimensional checks, surface testing, and pressure resistance evaluation — ensuring compliance with customer specifications.

🌍 Applications in Industry

Socket Weld Flanges are widely used in:

Oil & Gas Pipelines

Petrochemical Plants

Marine Engineering

Power Generation Systems

High-Pressure Steam Lines

Their high performance in leak prevention and mechanical durability makes them a top choice for critical fluid transportation systems.

🔗 Why Choose NFI Socket Weld Flanges

At Cangzhou NFI Flange Co., Ltd., we combine precision forging, advanced machining, and rigorous quality control to deliver socket flanges that meet the highest global standards.
We provide OEM customization, export-ready packaging, and certified testing documentation to support our international partners.

👉 Learn more about our Socket Weld Flange specifications and request a quote here:
https://www.enfipipe.com/flanges_details/248.html