Why Socket Weld Construction Is Useful

The socket provides a defined seating location for the pipe, helping simplify positioning during fabrication. Unlike a slip-on arrangement, the pipe fits into the flange socket before welding.

This makes Socket Weld Flanges a practical choice where:

• Pipe diameters are relatively small
• Precise positioning is important
• A welded connection is required
• Space around the piping assembly is limited
• A clean and compact flange arrangement is preferred

Technical Data

Parameter	Typical Specification
Product	Socket Weld Flange
Connection	Socket Weld
Materials	Carbon Steel, Stainless Steel, Alloy Steel
Common Pressure Classes	150, 300, 600, 900, 1500, 2500
Size Range	According to applicable standard
Facing	RF, FF, RTJ where applicable
Dimensional Standard	ASME B16.5 / applicable standard
Socket Bore	Matched to specified pipe size
Flange Type	Forged / as specified
Welding Method	Fillet Weld
Surface	Machined sealing face
Bolt Arrangement	Standard for selected size and pressure class
Inspection	As required by project specification

Material Selection

Socket Weld Flanges can be sourced in several material categories depending on the service conditions.

Carbon Steel

Suitable for many conventional industrial and utility piping applications where corrosion and temperature requirements are within the material’s design limits.

Stainless Steel

Used where enhanced corrosion resistance, cleanliness or exposure to aggressive environments is a consideration.

Alloy Steel

Selected for specialized applications requiring suitable performance at elevated temperatures or under demanding mechanical conditions.

Key Engineering Features

• Recessed Socket:

The internal step supports pipe positioning before welding and provides a defined seating arrangement.

• Compact Profile:

The design is well suited to small-bore piping systems where a relatively compact connection is desirable.

Machined Facing:

The flange face is prepared to accommodate the required gasket and mating flange configuration.

Multiple Pressure Classes:

Different pressure classes allow selection according to the design requirements of the piping system.

Permanent Welded Joint:

Once correctly installed and welded, the flange forms an integral connection with the pipe.

Where Socket Weld Flanges Are Used

These flanges are commonly found in:

• Small-bore process piping
• Chemical processing units
• Instrumentation lines
• Hydraulic systems
• Steam and utility services
• Compressed-air systems
• Power plant auxiliary piping
• Oil and gas installations
• Industrial equipment connections
• Engineering and fabrication projects

Socket Weld vs Slip-On Flanges

Although both flange types can be used for welded piping connections, their construction differs.

A Socket Weld Flange has a recessed socket into which the pipe is inserted, while a Slip-On Flange slides over the pipe and is welded externally. Socket Weld Flanges are often considered where smaller pipe sizes, positioning accuracy and a compact connection are important.

The appropriate design should ultimately be selected according to the piping code, pressure, temperature and service conditions.

What to Specify When Ordering

For accurate sourcing, buyers should provide:

• Nominal pipe size
• Material grade
• Pressure class
• Facing type
• Pipe schedule
• Applicable standard
• Quantity
• Service conditions, where relevant

Providing complete technical information helps ensure compatibility between the flange, pipe and mating components.

Sohum Industrial Sales Corporation

Sohum Industrial Sales Corporation supports industrial procurement requirements with specification-based sourcing and bulk supply assistance. The company serves engineering contractors, fabricators, industrial plants, project suppliers and maintenance teams throughout eastern and northeastern India. The focus is on supplying suitable flange configurations according to the customer’s technical and project requirements.

Source Socket Weld Flanges for Your Project

For Socket Weld Flanges requirements across West Bengal, Kolkata, Odisha, Chhattisgarh, Bihar, Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Tripura and Bhutan, connect with Sohum Industrial Sales Corporation. Share your size, material, pressure class, facing, standard and required quantity to discuss your requirement and obtain a suitable quotation.