The Allegheny 40127F is a 4-inch aluminum long radius belled bend with a 15-degree angle for tank trailer piping applications. This welded-style fitting features belled ends that provide better piping alignment and faster installation compared to traditional butt-welded fittings. Made from seamless aluminum tubing with a 6-inch radius, the 40127F offers a lightweight yet strong solution for tank trailer piping systems.