MarMac® Manufacturing Company Email Format

ManufacturingSouth Carolina, United States11-50 Employees

MarMac Manufacturing Company, established in 1953, is a mid-sized U.S. manufacturer based in McBee, South Carolina, that specializes in products for underground drainage infrastructure. Its portfolio includes pipe couplings, sealants, and gaskets used in gravity-flow, stormwater, and wastewater systems across precast concrete, corrugated metal/steel pipe, and plastic piping applications. The business operates through two divisions—Construction Products, which covers underground drainage components, and Applied Infrastructure Sciences (AIS), which develops coatings, concrete admixtures, and surface treatments to extend the life of built materials. MarMac produces in the United States and serves customers both domestically and internationally. In August 2024, the company announced a product-focused development: Admixture AMX 5500, a water-based, ultra-low VOC admixture with antimicrobial technology designed to limit bacterial growth on concrete surfaces.

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