فلانش لحام بالصندوق (Socket Weld Flange)

Socket weld flanges feature a socket (recessed bore) into which the pipe is inserted before being fillet welded at the hub. This design provides good flow characteristics for small-diameter piping where internal weld protrusion is manageable. Socket weld flanges are primarily used in sizes DN50 (NPS 2) and smaller, though they are available up to DN100 for certain applications.

The socket design provides accurate alignment without the need for tack welding during fit-up. A gap is intentionally left between the pipe end and the socket bottom before welding to accommodate thermal expansion of the pipe within the socket. Our socket weld flanges are forged to ASME B16.5 and are commonly specified for chemical injection lines, instrument connections, steam tracing, and small-bore high-pressure process piping in Classes 150 through 1500.