See related link to Pittsburgh Steelers official website.
412 is the area code of Pittsburgh, Pennsylvania.
One can purchase Pittsburgh Steelers jerseys when one goes to NFL shops. The shops have NFL team jerseys with logo and design of Pittsburgh Steelers on them. Price starts from $100.
American Iron & Steel Institute
Steely McBeam
The Steelers logo is based on the Steelmark logo belonging to the American Iron and Steel Institute (AISI).The logo's meaning was extended to include the three materials used to produce steel: yellow for coal, orange for ore and blue for steel scrap.
Pittsburgh is known for steel so they named them after the steel and their logo is the steel symbol only in different colors.
The Steelers logo has three colored astroids, a hypocycloid with four cusps, (yellow, red and blue) and the name Steelers written in black to the left of them. It is encased in a gray ringed, circular white background.
The Pittsburgh Steelers sometimes have a black wave on their merchandise, but I couldn't find a specific company with a black wave for a logo.
The Steelers use the Steelmark logo which belongs to the American Iron and Steel Institute. Instead of the word (Steel) inside the logo, it was changed to (Steelers).The colors represent the materials used to make steel:Yellow for coalOrange for oreBlue for steel scrap
The Steeler"s Logo is 3 four point stars. The three stars are red, yellow, and blue. They are placed on a white background with the word Steelers to the left of the stars.
Yellow: CoalOrange: Iron OreBlue: Steel Scrap Metal