Colonial Construction Company is one of the largest single-plant producers of prestressed structural floor and roof systems (Hollowcore plank) in the southeastern United States. We manufacture 6, 8, 10, and 12 Hollowcore, solid slabs, precast stairs, inverted beams, precast seawall panels, bin block, and septic tanks. For more information, please visit our website at http://hollowcore.net.
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