SAE Socket Weld Flange are hydraulic flanges constructing in accordance to SAE J518 / ISO6162 standards. They are typically useful on smaller sizes of high pressure pipes. These pipe flanges are attached by inserting the pipe into the socket end and applying fillet weld around the top. This allows for a smooth bore and better flow of the fluid or gas inside of the pipe. They are meant for high pressure applications inĀ the following 2 series, series 3000 and series 6000.