No, they were not. However the Pittsburgh Steelers football team was known as the Pirates from 1933-1939.
Pittsburgh, Pennsylvania's NFL football team name is the Pittsburgh Steelers.
Pittsburgh Steelers. NFL football.
The Pittsburgh "Steelers"
The Pittsburgh "Steelers"
The Steelers.
Pittsburgh Steelers
Pittsburgh Steelers
The Steelers.
The Pittsburgh Steelers
Pittsburgh steelers
Pittsburg Steelers