304 Stainless Steel 150# Socket Weld Raised Face Flange

Product Highlights

• ASTM A/SA182 F304/L stainless steel construction
• ASME B16.5 dimensional configuration
• Class 150 pressure class
• Socket Weld (SW) connection
• Raised Face (RF) sealing surface
• Forged stainless steel construction
• Excellent general corrosion resistance
• Precision-machined gasket sealing face
• Compact design for small-bore piping systems
• Designed for use with compatible Class 150 raised face flange systems
• Suitable for industrial, commercial, process, and mechanical piping applications

These socket weld flanges are forged from dual-certified ASTM A/SA182 F304/L stainless steel for strength, durability, and corrosion resistance in demanding piping environments.

The raised face sealing surface is precision machined to applicable ASME B16.5 dimensional requirements to provide a dependable gasket sealing surface when installed with compatible Class 150 raised face flange components.

The socket weld connection incorporates a recessed socket that receives the pipe end before welding. After proper pipe positioning, an external fillet weld is applied around the hub to create a permanent welded pipe connection while the flange face remains available for bolted assembly to compatible mating equipment or piping.

A socket weld flange contains an internal recessed socket sized to receive the end of the pipe. The pipe is inserted into the socket and positioned according to the applicable fabrication and welding requirements.

After positioning, an external fillet weld is applied around the flange hub where it meets the pipe. The resulting welded connection secures the flange permanently to the pipe while the flange itself can be bolted to a compatible mating flange, valve, vessel, or equipment connection.

This configuration makes socket weld flanges particularly useful in smaller-diameter piping systems where a compact welded connection is desired together with the serviceability of a removable bolted flange joint.

The Raised Face (RF) configuration concentrates the gasket sealing area on the machined raised portion of the flange face. When properly assembled with a compatible gasket and mating raised face flange, bolt loading compresses the gasket between the sealing surfaces.

Always confirm that the mating flange, gasket, bolting, and associated components are compatible with the flange size, pressure class, material, service conditions, and applicable piping-system requirements.

• Confirm the correct nominal pipe size and socket weld flange size before installation.
• Verify that the mating flange is compatible with the Class 150 raised face configuration.
• Confirm the pipe outside diameter and wall thickness are suitable for the flange socket.
• Prepare and clean the pipe and flange surfaces before welding.
• Position the pipe in accordance with applicable socket weld fabrication procedures.
• Use an appropriate welding procedure for the stainless steel material and piping service.
• Select a gasket suitable for the raised face configuration and process conditions.
• Use appropriate flange bolts, studs, nuts, and related hardware.
• Confirm material compatibility with the process fluid and operating environment.
• Verify applicable pressure and temperature requirements before installation.
• Inspect flange sealing surfaces for damage or contamination before assembly.
• Properly align mating flanges before tightening bolting.
• Follow applicable welding, flange-bolting, gasket-installation, and piping-code requirements.
• Installation and welding should be performed by qualified personnel familiar with stainless steel socket weld piping systems.