ASTM A105 weldolets create strong, full-penetration branch connections in carbon steel piping. This weldolet measures 6 by 1/2 inch (DN150 by DN15) with SCH 80 wall thickness and butt weld ends for direct fusion into the run pipe. Made from forged carbon steel to ASTM A105, it suits high-pressure steam, oil, and gas lines where reinforced branch outlets must match parent pipe strength and withstand cyclic loading without leakage.