150# STD Bore Socket Weld Flanges (Flat Face)

150# A/SA105 Forged Carbon Steel Socket Weld Flange - STD /SCH 40 Bore - Flat Face (FF) B16.5

• A socket weld (SW) flange features a socket-like recess (bore) into which a pipe end is inserted. The connection is made by fillet welding the pipe from the inside of the flange (socket) and the outside, providing a strong, leak-resistant joint. It's ideal for smaller pipe sizes (typically 1/2" to 4" NPS) and high-pressure scenarios where welding strength is critical, but it's less common for larger diameters compared to weld neck flanges.
• The sealing surface is completely flat (no raised rim or groove), which distributes gasket pressure evenly. Flat face (FF) flanges are often used in low-pressure systems or with full-face gaskets that cover the entire bolt circle. They're easier to align and less prone to gasket blowout in certain non-critical applications but may not provide as tight a seal as raised face (RF) types in higher pressures.

Datasheet / Dimensions

Certificate of Conformance

• Forged Steel Flanges conform to ASTM A/SA105
• Flange Dimensions conform to ASME B16.5 through 24”
• Flat Face (FF)
• STD / SCH 40 Bore
• Pressure Class: 150#
• From Import - India