LightPolesPlus.com RTSA series steel light poles are manufactured in the United States and deliver the highest quality available to the commercial and industrial markets. Round-tapered steel anchor light poles feature 11ga or 7ga shaft construction fabricated from commercial-grade carbon steel tubing and an anchorage base plate precision machined and fabricated from rigid steel. Factory applied finishing options include polyester powdercoat, hot-dipped galvanizing and custom architectural colors.