Ready Mix Concrete, Sand and Gravel


Hi-Grade Materials is the smart choice for ready-mix concrete, sand and gravel needs. We provide ten convenient locations serving the entire Victor Valley, Antelope Valley, Morongo Basin and Low Desert. In addition to our premier ready-mix concrete, we provide a variety of materials to enhance any concrete project such as: color options, fiber additives for strength, and more.

The Robar Companies (Hi-Grade Materials Co., Endura Steel, Inc., Smith Ironworks) and AgCon, Inc. are providers of essential business services for the construction industry which is exempted from the State Executive “Stay at Home” Order.

As such, we will continue to maintain all normal business operations in order to sustain our commitment to our business partners and community while staying informed so that we may make the best possible decisions regarding our employees, customers and everyone associated with our business during this rapidly changing situation.