Service Metal
316 Stainless Steel 150# Raised Face Socket Weld Flange
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- Allow 1-2 Days to Ship
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- 0.00 LBS
Description
316 Stainless Steel 150# Raised Face Socket Weld Flange
316 Stainless Steel Class 150 Raised Face Socket Weld Flanges provide a compact, corrosion-resistant flanged connection for piping systems where a welded pipe connection and removable bolted flange joint are required. Manufactured from ASTM A/SA182 F316/L stainless steel, these flanges combine mechanical strength, durability, and enhanced corrosion resistance for demanding industrial, chemical, water treatment, food processing, marine, and general process piping applications.
Designed to conform to ASME B16.5 dimensional requirements, each socket weld flange features an internal socket that receives the pipe end before welding and a precision-machined Raised Face (RF) sealing surface. The socket weld design is commonly used in smaller-bore piping systems where compact installation, reliable alignment, and a permanent welded pipe connection are desired.
Product Highlights
- ASTM A/SA182 F316/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
- Enhanced corrosion resistance
- Compact design for smaller-bore piping systems
- Pipe inserts into recessed socket before welding
- Precision-machined gasket sealing face
- Suitable for industrial, chemical, water treatment, food processing, marine, and general process piping
Technical Specifications
| Product Type | Socket Weld Flange |
|---|---|
| Material | 316/L Stainless Steel |
| Material Specification | ASTM A/SA182 F316/L |
| Pressure Class | Class 150 |
| Connection Type | Socket Weld (SW) |
| Face Type | Raised Face (RF) |
| Dimensional Standard | ASME B16.5 |
| Construction | Forged Stainless Steel |
| Primary Function | Welded Pipe Connection with Removable Bolted Flange Joint |
| Typical Applications | Industrial, Chemical, Water Treatment, Food Processing, Marine, Mechanical and General Process Piping |
Construction Details
These socket weld flanges are forged from dual-certified ASTM A/SA182 F316/L stainless steel for strength, durability, and enhanced 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 internal socket that receives the pipe end before welding. Once the pipe is properly positioned, an external fillet weld is applied around the flange hub to create a permanent pipe-to-flange connection while retaining a removable bolted flange joint for maintenance, inspection, equipment access, or piping changes.
Why Choose a 316 Stainless Steel Socket Weld Flange?
Enhanced Corrosion Resistance
- Manufactured from 316/L stainless steel
- Provides improved corrosion resistance in many demanding environments
- Well suited for chemical and water treatment systems
- Useful in coastal and marine environments
- Suitable for food processing and general industrial service
Compact Welded Connection
- Pipe inserts into the recessed flange socket
- External fillet weld secures the flange to the pipe
- Compact design is well suited for smaller-bore piping
- Helps provide consistent pipe positioning before welding
- Retains a removable bolted flange connection for servicing
Performance Features
Class 150 Design
Designed for use as part of a compatible ASME B16.5 Class 150 flange system with appropriate mating flanges, gaskets, bolting, piping, and associated components.
Raised Face Sealing
The precision-machined raised face provides the gasket sealing surface required for use with compatible raised face gaskets and mating Class 150 flange components.
316/L Stainless Steel
ASTM A/SA182 F316/L stainless steel provides a combination of mechanical strength, durability, and enhanced corrosion resistance for demanding piping service.
Common Applications
Industrial & Process Piping
- Chemical processing systems
- Water and wastewater treatment
- Food and beverage processing
- Marine and coastal piping
- General industrial process piping
Small-Bore Piping Connections
- Instrumentation piping
- Equipment connections
- Valve connections
- Mechanical piping systems
- Compact welded piping assemblies
How a Socket Weld Flange Works
A socket weld flange contains an internal recessed socket sized to receive the end of the adjoining pipe. The pipe is inserted into the socket and positioned according to the applicable fabrication and welding procedure.
After the pipe has been positioned correctly, an external fillet weld is applied around the flange hub where it meets the pipe. This creates a permanent welded connection between the flange and pipe.
The flange can then be bolted to a compatible mating flange, valve, vessel, or equipment connection using an appropriate gasket and bolting arrangement.
Raised Face Flange Design
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, Class 150 designation, material, service conditions, and applicable piping-system requirements.
316 Stainless Steel Construction
316/L stainless steel contains molybdenum, which contributes to improved resistance to pitting and localized corrosion in many environments compared with 304-series stainless steel.
This makes 316/L stainless steel a common material choice for chemical processing, water treatment, marine, coastal, food processing, and other piping applications where increased corrosion resistance is desirable.
Actual material suitability depends on the process media, chemical concentration, temperature, pressure, environmental exposure, and applicable piping-system requirements. Compatibility should always be verified for the intended service.
Socket Weld Installation Considerations
- Confirm the correct nominal pipe size before installation.
- Verify that the flange socket is compatible with the adjoining pipe outside diameter.
- Confirm that the mating flange is compatible with the Class 150 raised face configuration.
- Prepare and clean the pipe and flange socket surfaces before welding.
- Insert and position the pipe according to the applicable socket weld fabrication procedure.
- Maintain the required pipe-end clearance before welding where applicable.
- Use an appropriate qualified welding procedure for the stainless steel material and piping service.
- Apply the required external fillet weld according to project and code requirements.
- 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.
- Installation and welding should be performed by qualified personnel familiar with stainless steel socket weld piping systems.
Product Selection Considerations
Size & Pipe Compatibility
Confirm the required nominal pipe size, pipe outside diameter, and Class 150 flange designation before ordering. The flange socket must be compatible with the adjoining pipe dimensions.
Material & Service Conditions
Confirm that ASTM A/SA182 F316/L stainless steel and the socket weld connection are suitable for the process fluid, operating environment, pressure, temperature, and applicable piping-system requirements.
Product Documents
Reference the available pipe sizing information, Service Metal specification sheet, and Certificate of Conformance for additional product and piping information.
Need Help Selecting a Stainless Steel Flange?
Our industrial PVF specialists can help review your flange size, pressure class, material, socket dimensions, face type, piping application, corrosion-resistance requirements, and other project requirements before you order.
Frequently Asked Questions
What is a 316 stainless steel socket weld flange used for?
A socket weld flange is used to create a welded connection between pipe and a removable bolted flange joint. It is commonly used in smaller-bore industrial, process, mechanical, and equipment piping systems.
What material is this socket weld flange made from?
This flange is manufactured from ASTM A/SA182 F316/L stainless steel.
What pressure class is this flange?
This product is a Class 150 socket weld flange designed for use with compatible Class 150 flange-system components.
What does Socket Weld or SW mean?
Socket Weld refers to the pipe connection configuration. The pipe is inserted into a recessed socket in the flange and secured with an external fillet weld around the flange hub.
Does a socket weld flange require welding?
Yes. The adjoining pipe is inserted into the flange socket and secured with an appropriate external fillet weld.
What does Raised Face or RF mean?
Raised Face refers to the flange sealing configuration. The gasket sealing area is located on a machined raised portion of the flange face that mates with a compatible raised face flange and gasket.
What standard applies to this flange?
The flange is designed around applicable ASME B16.5 dimensional requirements for Class 150 flanged piping components.
What is the advantage of a socket weld flange?
Socket weld flanges provide a compact welded connection and help position the pipe within the flange socket before welding, making them useful in many smaller-bore piping systems.
What is the advantage of 316 stainless steel?
316/L stainless steel generally provides improved resistance to pitting and localized corrosion in many demanding environments compared with 304-series stainless steel.
What gasket should be used with this flange?
The gasket must be compatible with the Class 150 raised face flange configuration as well as the process fluid, pressure, temperature, and other operating conditions. Verify gasket requirements for the specific piping system before installation.
How do I determine the pressure and temperature rating?
Pressure and temperature capabilities depend on the applicable ASME B16.5 requirements, material specification, flange size, piping configuration, and service conditions. Verify the allowable rating for the specific installation before placing the flange into service.
Important Ordering Notes
- Product type: Raised Face Socket Weld Flange.
- Material: ASTM A/SA182 F316/L stainless steel.
- Pressure class: Class 150.
- Connection type: Socket Weld (SW).
- Face configuration: Raised Face (RF).
- Designed around applicable ASME B16.5 dimensional requirements.
- Confirm the required nominal pipe size before ordering.
- Verify flange socket compatibility with the adjoining pipe outside diameter.
- Verify compatibility with the mating flange, gasket, bolting, and associated piping components.
- Confirm 316/L stainless steel compatibility with the intended process fluid and operating environment.
- Pressure and temperature requirements should be verified for the specific installation.
- Use appropriate stainless steel welding procedures and qualified personnel.
- Installation should comply with applicable piping codes and project requirements.
