b70

B70 is a designation used in multiple contexts. It does not refer to a single object or concept, but appears in aviation, transportation networks, and product catalogs.

In aviation and military procurement, B-70 most notably refers to the XB-70 Valkyrie, an American experimental strategic bomber developed by North American Aviation for the United States Air Force during the 1950s and early 1960s. Two prototypes were built; the program was ultimately terminated before production due to cost and shifting defense priorities. The Valkyrie program contributed to high-speed flight research and influenced later aerospace advances.

In road and route designation systems, B70 is used as a road or route number in several countries. Such designations typically denote minor or regional roads and vary by jurisdiction; the same code in different places refers to different actual routes.

Beyond transport, B70 may appear as a catalog, model, or serial code in various industries, including consumer electronics, manufacturing, and logistics. The precise meaning is defined by the context in which it is used.