Socket Weld Flanges

Socket weld flanges are used where the pipe is set into a recessed socket before welding. That design is typically specified on smaller-diameter piping where the connection style is already defined and the flange needs to match the system cleanly. In stainless service, they are commonly used where class, size, and material all need to stay consistent with the rest of the line.

PipingNow offers socket weld flanges in 150#, 300#, and 600# classes in 304L and 316L stainless steel.

Where Socket Weld Flanges Are Commonly Used

This style is often selected for stainless process piping, plant utility lines, and other installations where a socketed welded connection is called for. It is especially common on smaller sizes where the project specification already defines the connection method and the goal is to match it correctly.

• stainless process piping
• plant and utility systems
• smaller-diameter piping runs
• fabricated assemblies
• applications requiring a socketed welded connection

Materials, Classes, and Size Range

This collection includes 150#, 300#, and 600# options in 304L and 316L stainless steel. 304L is commonly used for general stainless applications, while 316L is often selected where additional corrosion resistance is needed. Available sizes run from 1/2 in through 10 in.

• 150#, 300#, and 600# pressure classes
• 304L stainless steel
• 316L stainless steel
• sizes 1/2 in through 10 in

What to Check Before Ordering

The main thing is to confirm that the flange matches the piping system it is being installed on. Pressure class, nominal size, material grade, and the required connection style all need to line up. If one of those details is off, the part may look close but still be wrong for the job.

• pressure class
• nominal size
• material grade
• socket weld connection requirement
• mating flange compatibility
• service conditions
• project specification

FAQs

What is a socket weld flange?
A flange designed with a recessed socket so the pipe can be inserted into the flange before welding.

What pressure classes are available?
150#, 300#, and 600#.

What materials are offered?
304L stainless steel and 316L stainless steel.

What size range is available?
1/2 in through 10 in.

When is this style commonly used?
It is commonly used on smaller stainless piping systems where a socketed welded connection is specified.

What should I match before ordering?
Pressure class, nominal size, material grade, mating flange details, and the required connection style.

Related Categories

All Flanges | 150# Flanges - Stainless Steel | 300# Flanges - Stainless Steel | 600# Flanges - Stainless Steel | Blind Flanges | Weld Neck Flanges | Slip On Flanges | Lap Joint Flanges | Threaded Flanges