Burial Vaults  In 1995, Mid-State Concrete Products purchased Santa Maria Vault Company. They had been in operation as a manufacturer of precast burial vaults for many years.  Mid-State Concrete Products manufactures a variety of burial products for both full casket and cremated interments. Our vaults are designed to suit all budgets and personal tastes in styles complimentary to all types of caskets. As a leading manufacturer throughout most of California, Mid-State Concrete Products also manufactures a complete line of Trigard Vaults and Liners. The Trigard vaults and liners have been earning the trust and respect of the funeral industry for over twenty years. Standard Concrete Vaults •Deluxe Concrete Vaults Contact Us