Ganpat Metal Industries is well recognized trader and dealer of ASTM A234 WP22 Butt Weld Fittings, which provide an outlet from a larger pipe to a smaller one (or one of the same size). The main pipe onto which the branch connection is welded is usually called the Run or Header size.ASME SA 234 WP22 Pipe Fittings is an economical branch connection, which is designed to minimize stress... https://ganpatmetal.com/alloy-steel-WP-91-buttweld-fittings-manufratures-expoters-suppliers-stockists.html