Diamond Plastics - PVC Pipe For The 21st Century PVC, Pipe, PVC Pipe, Diamond, Diamond Plastics, Plastics, Plastics Manufacturing, Sewer, Ag, Utility, municipal, new pressure products, pressure pipe through 60 inch, 60 inch pressure pipe, 54 inch pressure pipe, pressure pipe through 54 inch, manufacturer, pvc pipe manufacturer, big pipe, big pvc pipe, large diameter pipe, large diameter pvc pipe, Diamond Plastics Corporation is the producer of the world’s largest, corrosion free PVC pipe through seven strategically located plants throughout the United States, fulfilling your water, sewer and irrigation piping needs since 1982.