Home - High Grade Materials HomeProductsLocationsQuality ControlContact UsRequest an EstimatePhoto GalleryWelcome to High Grade Materials!Providing quality ready mix concrete... an Estimate form and we'll get you the information you need.We have11 Ready-mix and 3 Gravel Pit locations in Michigan. Find the one nearest you. Are you a Golf Course Superintendent..., sand and gravel, and concrete products with exceptional service to Western, Southwestern, and parts of CentralMichigan Over 38Years in Business! 1975-2013 We always offer: Quality...