Socket Weld Flanges

The socket weld flange (SW flange) is a precision-forged connection designed for high-pressure, small-bore piping systems. Its machined internal shoulder controls pipe insertion depth and ensures a consistent 1.6 mm expansion gap prior to fillet welding – delivering fatigue strength 50% superior to double-welded slip-on flanges. Available in carbon, alloy, and stainless steel, it meets ASME B16.5 across Class 150–2500, making it a robust, export-grade solution for demanding process and utility pipelines.