HD (Heavy Duty) ramps and components create graffiti-resistant skateparks that withstand extreme environments, including the daily grind of bikes and skateboards. Modular design can be reconfigured to meet changing needs. Steel structures contain a hot-dipped galvanized coating that prevents corrosion. Skatelite Pro material, offered in a double thickness (12 in.), enhances ramps and other skating surfaces. The surface material is said to provide more consistent wheel grip and lower surface temperature than steel, while delivering better impact attenuation and a less abrasive surface than concrete. Spohn Ranch Inc., City of Industry, Calif.