Click here for more information about PRO-21
Click here to request order information on Diamond's wide array of PVC pipe products.
Diamond Plastics
Diamond Plastics has become a major national producer of PVC products since it purchased
two operating plants from Giffor-Hill in 1982.
Diamond Plastics now operate
five pipe production plants in the United States. For the past 17 years, Diamond has been
providing reliable PVC pipe products to the agricultural irrigation and municipal water
and sanitary sewer markets. Diamond is now providing large diameter PVC closed profile PVC
pipe for the same markets. We call it "PRO-21," Profile pipe technology for the
21st century. 