A diamond may be a girl's best friend, but when she needs good plumbing, plastic has much greater utility. Diamond Plastics Corporation produces water and sewer PVC pipes used in agriculture, industry, and public utilities. Diamond Plastics is one of the largest PVC pipe producers in the world, and offers a wide range of sizes, including gravity PVC piping products through 60 inches in diameter and PVC pressure piping products up to 48 inches in diameter. The company, which has grown by acquiring other plastic pipe makers, has manufacturing plants located in Georgia, Indiana, Kansas, Louisiana, Nebraska, Nevada, and Texas.