About: Palmer Steel Supplies Palmer Steel uses Computer-aided Technology in the design, analysis and manufacturing through the use of 3-D Modeling, MRP software and CNC systems. The in-house Project Management and Drafting divisions include a staff of experienced personnel in drafting, production control and cost engineering. We use 3-D modeling to produce structural steel shop drawings with exceptional accuracy. Palmer Steel has been providing quality fabricated steel products since 1953. Our facility is located in McAllen, Texas on approximately 15 acres with over 100,000 square feet under one roof.