Robar Enterprises, Inc./High Grade Materials » Membership List All Member Listings Alphabetical order by company name Go back to directory. Add to Address Book. Robar Enterprises, Inc./High Grade Materials Robar Enterprises, Inc./High Grade MaterialsStructural Steel C51 Contact: Jon Hove Home 17671 Bear Valley Rd. Hesperia CA 92345 home Work Phone: 1-760-244-9325work Work Email: hjhove@robarenterprises.comINTERNET Website: www.robarenterprises.com Categories: Material Suppliers, Specialty Contractors C+D, Structural Steel C51 Updated 6 months ago.