CSFF Circular columns provide contractors with safe, versatile, and economic circular steel forms. The key-Bolt simply turns two identical steel half shell structures into a perfect round structural form. The forms of the columns are produced in many sizes according to the site request. They guarantee perfect performance with a special care in the units manufacturing to prevent bleeding at joints during all stages of construction. The circular column formwork can withstand large pressure loads and transfer it to the suitable stratum. It can also be combined with modular formwork for curved wall finishes and oval columns.