QualiBarrier is the manufacturer of a high strength manganese steel bar, the TISAT3030TM. The TISAT3030TM measures between 55 – 63 on the Rockwell hardness scale. The bar is 30mm by 16mm in profile. It is specified by the South Africa Department of Corrections Services for use in the prison doors and windows. Typical applications are vault doors, safety room gates and doors, ATM structures etc.