SW Flange (Socket Weld Flange)

Overview

Socket Weld Flanges (SW Flanges) are designed for small-diameter, high-pressure piping systems. Pipes are inserted into the socket bore of the flange and then fillet welded, creating a strong, leak-resistant connection suitable for critical industrial applications.

Manufactured in accordance with international standards, our SW Flanges are widely used in oil & gas, petrochemical, chemical, power generation, and high-pressure fluid systems worldwide.

Product Features

  • Strong Welded Connection: Socket design ensures stable pipe alignment and reliable welding performance.

  • High Pressure Capability: Ideal for small-diameter pipelines operating under high pressure and temperature.

  • Smooth Flow Transition: Internal bore provides a uniform flow path, reducing turbulence and pressure loss.

  • Material Options: Available in Carbon Steel, Stainless Steel, Alloy Steel, and Duplex Steel.

  • Size Range: DN15 – DN300 (1/2" – 12").

  • Pressure Ratings: ASME Class 150 – 3000; PN 10 – PN 100.

  • Manufacturing Method: Forged and machined for accurate dimensions and excellent surface finish.

  • Custom Fabrication: Available according to drawings or special project requirements.

Standards Compliance

Our Socket Weld Flanges are manufactured according to major international standards:

  • ASME B16.5 – American flange standard

  • EN 1092-1 – European standard

  • DIN / JIS – Optional for European & Japanese projects

  • GOST 12820 / GOST 12821 – Russian standard

  • Custom Standards – Available upon request

Ensures safe and reliable operation in high-pressure piping systems.

Materials & Grades

  • Carbon Steel: ASTM A105, ASTM A350 LF2

  • Stainless Steel: ASTM A182 F304 / F316 / F321

  • Alloy Steel: ASTM A182 F11 / F22

  • Duplex Steel: ASTM A182 F51 / F53

Materials are selected to ensure excellent mechanical strength and corrosion resistance.

Applications

Socket Weld Flanges are widely used in:

  • Small-diameter high-pressure pipelines

  • Oil & gas processing and transmission systems

  • Chemical and petrochemical plants

  • Power generation systems

  • Hydraulic and steam pipelines

Ideal for applications requiring compact size and high reliability.

Why Choose Our Socket Weld Flanges

  • Precision Manufacturing: Accurate socket bore and bolt holes for easy installation

  • Standards Compliance: ASME, EN, DIN/JIS, GOST, or project-specific standards

  • Material Variety: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

  • Custom Solutions: Sizes, pressure classes, and specifications per drawings

  • Global Export Experience: Trusted supplier for international B2B projects

 

No products found
Use fewer filters or remove all