To promote the practical utilization of residual materials (type B cut pipe) formed by cutting off a straight pipe and to reduce the construction cost, when connecting a fitting with the straight pipe in piping for water supply works and to simplify the design and construction of the piping by joining the fittings to each other.

This is a casting having receivers 2 (receiver of same type with established NA type cap) in the both sides of the short pipe 1 and the fitting for the water supply works.