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. On radiused transition pieces, a 14-in.-thick sheet of perforated aluminum supports Skatelite surface. According to the company, the aluminum is much stronger than traditional plastic substrates used, will not trap moisture and resists harmful effects of UV radiation. Bolt-through, stainless steel hardware secures surfaces firmly in place. Guardrails are integrated into support frame, forming perimeter barriers that comply with safety standards. Backed by 20-year limited warranty. Product line also includes skateparks made with lumber frames, concrete surfaces or hybrid combinations. Full-service firm helps municipalities create custom skateparks from inception to installation. Spohn Ranch Inc., City of Industry, Calif.