Columbus Stainless (Pty) Ltd, established in 1964 and operating under its current structure since the 1990s, is the only fully integrated stainless steel mill on the African continent. Based in Middelburg, Mpumalanga, the company operates a technologically advanced, single-site electric arc furnace steelmaking and rolling mill operation with an annual capacity of several hundred thousand tons.
The company is 76% owned by international stainless steel manufacturing group Acerinox S.A., with the remaining 24% held by South Africa’s Industrial Development Corporation (IDC). Columbus Stainless supplies flat-rolled stainless steel products to both the South African domestic fabrication market and export destinations across Europe, the Americas, the Middle East, and Asia.