Socket Weld Flange

Socket weld flange, simplified as SW flange, has a recessed area (like a shoulder) in the flange bore. This shoulder serves as a guide to set the depth of the pipe that is inserted into the flange.

Socket Welded Flange Face Types

Socket welded flange, including RF type and RTJ type, which are similar to other types of welding flanges (slip-on, weld neck, or blind flange).

RF Type

RF socket weld flange has a small portion surrounding the flange bore that protrudes from the face. The gasket seat will be placed in this raised area.

RTJ Type

On the raised face surface, there is a groove is RTJ type, which you can place a gasket ring to get better sealing performance.

Click here to know the Socket Weld Flange vs Slip-On Flange

Key specifications

Standards: Primarily governed by ASME B16.5 for sizes up to 24 inches and ASME B16.47 for larger diameters.
Pressure Ratings: Available in pressure classes from 150 to 2500.
Nominal Pipe Size (NPS): Typically used for small nominal pipe sizes, from \(1/2\) inch to 24 inches.
Wall Thickness: Specified by the pipe schedule, with common options being Schedule 40 to 160.
Material: Standard materials include carbon steel (ASTM A105, A181), stainless steel (ASTM A182 F304/L, F316/L), and alloy steel (ASTM A182 F5, F9, F11, etc.).

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Advantages

1. Socket weld flange could replace a threaded flange, to minimize the risk of leakage.
2. No need to bevel before welding.
3. Welding work outside of the pipe will not penetrate the pipe bore
4. It is recommended for applications where internal welding operations are particularly difficult. This sock welded construction eliminates internal pockets while avoiding warpage of welding heat and damage to the flange face caused by weld spatter. It has the same internal pressure as the sliding on the flange and has a better fatigue life.

Socket weld flange Application:

Socket weld flanges create reliable, leak-proof connections for pipes carrying steam, gas, water, and various chemicals. Their robust design makes them ideal for applications where safety and the integrity of the system are critical, such as in refineries, processing plants, and steam lines.

1. Oil and Gas Industry

In the oil and gas sector, socket weld flanges are used in pipelines, processing plants, and offshore platforms.
They are perfect for processing and transporting hydrocarbons because they can withstand high temperatures and pressures.

2. Chemical Processing

The chemical industry relies on socket weld flanges for their piping systems.
These flanges ensure the safe and effective transportation of chemicals by enduring acidic materials and harsh environments.

3. Power Generation

Socket weld flanges are frequently used in power plants’ piping systems for important operations like cooling water circulation and steam distribution.

4. Construction and Manufacturing

Socket weld flanges are used in manufacturing and construction settings to connect pipes in a variety of systems, including industrial processes, gas distribution, and water supply.

With our Steel Socket Weld Flanges, you can expect a high-quality, reliable solution for your piping system needs. We are dedicated to delivering products that not only meet but exceed industry standards.