Supplies precast concrete products for building and highway construction in the southern region of Ontario and the northeast region of the US.Precast Concrete Product, Stairs, Security Barriers, Modular Buildings - Hy-Grade Precast Concrete Home About Hy-Grade Precast Products Quality Control Project Portfolio Our Staff Links Contact Us Site Map Stairs and Landings | Modular Buildings | Underground Products | Custom Components | Barriers Precast Concrete Products - Hy-Grade Precast Concrete Hy-Grade Precast Concrete has been a family owned business, exceeding customer's expectations since 1948