National Ladder & Scaffold Co. stocks and ships the complete Sumner product inventory including, Sumner Welding Tools, Clamps and Lifts. Sumner clamps and floor jacks solidify the structure of units and hold them in place, increasing safety and reliability on the workplace. National Ladder & Scaffold Co. carries Sumner Texas Pipe Dollies and Material Handling Carts that are designed to move heavy materials throughout the worksite with ease.