Stainless Steel Forged Socket Weld Pipe Flange

• Standard: ANSI
• Type: Welding Flange
• Material: Stainless Steel
• Structure: Lateral
• Connection: Welding
• Sealing Surface: RF
• Manufacturing Way: Forging
• Surface Treatment: Anti-Rust Oil
• Inspection: Factory in-House Self Check or Third Party Inspect
• Application Fields: Chemical Industry /Petroleum Industry
• Transport Package: Export Standard Package
• Specification: as per drawing or sample
• Trademark: Mingda
• Origin: Hebei China
• Production Capacity: 100PCS Per Day

Product Description

SW Flange (Socket Weld Flange) contain a shoulder on the inside of the flange that acts as a guide to set the depth at which the pipe is welded to the flange. They are fabricated by inserting the pipe end into the flange until it bottoms out against the shoulder, and then retracting the pipe 1/8 in before welding it in place. This practice was originally employed to reduce cracking due to thermal stresses in stainless steel superheaters, but over the years has become standard practice for the installation of all socket weld flanges (SW Flange).

Socket Weld Flanges are available in pressure from 150# and up and pipe schedule 40 to schedule 160. Specifying the pipe schedule ensures that ID of the SW Flange matches the ID of pipe for smooth fluid flow.

Mingda offers SW Flange in A105N, A105, SS316, SS304, A20, High Yield & Nickel Alloys.

 A pipe flange connects piping and components in a piping system by use of bolted connections and gaskets.
Most commonly used flanges are weld neck flange, slip on flange, blind flange, socket weld flange, threaded flange and lap joint flange (RTJ Flange). This type of connection in a pipe flange allows for ease of disassembly and separation for repair and regular maintenance. Most common specification for carbon steel and stainless steel flange is ANSI B16.5 / ASME B16.5.

Metal flanges are commonly used for industrial, commercial, and institutional application. Steel pipe flanges are available in variety of styles and pressure classes. Metal flanges are classified from 150 to 2500 # rating. In addition to specifying pressure class, certain flanges such as weld neck flange & socket weld flange also require specifying the pipe schedule. This ensures the pipe bore will match the bore of the weld neck or socket weld flange.

Mingda offers wide variety of pipe flanges in carbon steel, stainless steel and nickel alloy. We can also provide special flanges such as long weld neck flange, special material request and high-yield pipe flanges.


Products show