PURPOSE: To provide sprinkler pipings requiring only a small number of connection points in which pipings are facilitated, and in which a height under the roof can be small.

CONSTITUTION: In an extinguishing sprinkler piping structure to be installed under the roof, a branch onnection 9 having plural thread-type output connection ports at an outer diameter part of a connection main body is connected to a supply water main branch pipe 1 directly, output pipe parts 11, 12 are threaded to the output connection ports, and the output pipe parts 11, 12 and a sprinkler head installation pipe part 8 fixed under the roof are connected to each other by flexible tubes 10.