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Raised Face Socket Weld Flange (RF)

Ferrobend manufactures and supplies premium quality Raised Face Socket Weld Flanges (RF) designed for secure and reliable connections in small-diameter industrial piping systems. Featuring a precision-machined socket bore and raised gasket seating surface, RF Socket Weld Flanges allow the pipe to be inserted into the flange and secured by a fillet weld, providing accurate alignment and a robust pipe-to-flange connection for oil & gas, petrochemical, chemical processing, water treatment, and general process piping applications.

ISO 9001:2015 Third Party Inspection EN 10204 3.1 MTC Global Export Ready
ASME API DIN EN ISO JIS GOST BSI
Raised Face Socket Weld Flange (RF)
What Is a Raised Face Socket Weld Flange
01 — WHAT IS IT?

What Is a Raised Face Socket Weld Flange?

A Raised Face Socket Weld Flange (RF SW Flange) is a forged pipe flange designed for small-bore piping systems where a compact, strong, and reliable welded connection is required. It features a recessed socket that allows the pipe to fit inside the flange before being secured with a fillet weld around the outside.

The raised face (RF) provides a defined gasket seating surface for reliable sealing when properly assembled, while the socket design supports accurate pipe positioning and alignment. Raised Face Socket Weld Flanges are commonly used in pressure piping, including oil & gas, chemical processing, petrochemical, and other industrial applications.

Raised Face Socket Weld Flange Industrial Piping

Strong Welded Connection

Socket weld construction provides a robust connection for suitable pressure piping applications.

Ideal for Small-Bore Piping

Particularly practical for smaller pipe sizes where space and alignment are important.

Accurate Pipe Positioning

The recessed socket helps maintain proper pipe placement during installation.

Compact Design

Provides a space-efficient alternative for suitable small-bore piping systems.

Durable Forged Construction

Provides good mechanical strength and long-term service reliability.

03 — WHY CHOOSE

Why Choose Raised Face Socket Weld Flanges?

Raised Face Socket Weld Flanges are preferred for small-bore pressure piping where a compact flange design, accurate pipe positioning, and a strong welded connection are required. Their recessed socket simplifies pipe alignment, while the raised face gasket seating surface supports reliable sealing when properly assembled.

04 — ENGINEERING DESIGN

Design & Construction of Raised Face Socket Weld Flanges

The Raised Face Socket Weld Flange (RF SW Flange) is designed for small-bore piping systems requiring a compact flange arrangement, accurate pipe positioning, and a reliable welded connection. Its recessed socket bore allows the pipe to fit inside the flange before being secured with a fillet weld.

The raised face (RF) is precision machined to provide a defined gasket seating surface for reliable sealing when properly assembled. Manufactured through controlled forging processes, the flange provides high mechanical strength and durability. Heat treatment, when specified, and CNC machining help achieve accurate dimensions, pipe positioning, bolt hole alignment, and the required surface finish.

This robust construction makes Raised Face Socket Weld Flanges suitable for pressure piping, including oil & gas, petrochemical, chemical processing, and other industrial applications where compact and reliable connections are required.

Design & Construction of Raised Face Socket Weld Flanges
05 — ADVANTAGES

Advantages of Raised Face Socket Weld Flanges

Raised Face Socket Weld Flanges provide a compact and reliable solution for small-bore pressure piping systems where accurate pipe positioning, strong welded connections, and dependable gasket seating are important. Their forged construction and socket design make them practical for demanding industrial piping applications while maintaining a compact installation profile.

Strong Welded Connection

Provides a secure pipe-to-flange connection through the socket weld.

Accurate Pipe Positioning

Recessed socket helps maintain consistent pipe placement during installation.

Compact & Space-Efficient

Suitable for small-bore piping systems where installation space is limited.

Reliable Gasket Seating

The raised face provides a defined surface for proper gasket seating and sealing.

High Mechanical Durability

Forged construction provides good strength and long-term service reliability.

Advantages of Raised Face Socket Weld Flanges
05 — TECHNICAL SPECIFICATIONS

Socket Weld Flange Specifications

Dimensional Standards

Pressure Ratings

Standard Pressure Rating
ASME B16.5 Class 150 – 1500
ISO / EN PN 6 – PN40

Forming Methods

Hot Forged

Shaped by heating a solid billet and compressing it under high pressure, aligning the grain flow for superior strength and pressure resistance.

CNC Machining

Precision-cut from solid stock using computer-controlled tools, delivering tight tolerances and smooth finishes for custom or complex flange geometries.

View Full Dimension Table (1/2"– 24", DN15–DN600)

✓ Tested & Certified

Our products are tested and certified as per international quality standards with complete traceability and documentation.

  • MTC - EN 10204 3.1 (3.2 available on request)
  • PMI (Positive Material Identification)
  • NDT Testing Available
  • Third Party Inspection
View Full QA & Testing Process →

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