The D.C. Kerchoff Company is an industry leader in the manufacture of cast stone concrete products. Our Stone Cast products are among the strongest and resilient architectural concrete products. We go above and beyond the ASTM (American Society for Testing of Materials) guidelines for strength, durability, and water absorption for architectural concrete products in the construction of all of our cast stone concrete pavers, architectural columns, wall coping, balustrades, fireplace mantels, and Stone Cast concrete benches.