Urethane Supply Co.'s Nitrogen Plastic Welding System (6056) combines the Airless Plastic Welder (5600HT), a Hot Air Welder (6053), and a Nitrogen Control Box (6053N2) on one convenient welding cart. The company says the complete package contains virtually everything a shop needs to produce the highest quality plastic welds including a variety of welding rods and ribbon. The technician can simply plug in the unit, connect a nitrogen tank and shop air, and begin working.