Hi-Grade Materials is locally owned and the smart choice for all your ready mix concrete and rock and sand needs. We are with eight locations serving the entire Victor Valley, Antelope Valley and Morongo Basin for over 50 years, and your one-stop construction materials center. Hi-Grade Materials has provided millions of yards of concrete products for industrial, government, commercial and residential projects. From traditional ready mix concrete to specialized mixes, Hi-Grade Materials can produce a variety of concretes to meet strength, speed, aesthetic, and structural requirements.