ASME B16.25-2007.pdf Technical Overview The ASME B16.25 ASTM A105 Weldolet is a widely used branch connection fitting designed for high strength and high pressure piping systems. It follows the ASME B16.25 standard for butt weld ends and is manufactured from ASTM A105 carbon steel, ensuring durability, reliability and excellent mechanical properties. Key Features of ASME