a concrete forming system for constructing small diameter concrete columns with a refractory liner on the inside of the column wall . the present invention supports the inner and outer forms for the column wall on jacking frames which travel vertically on jacking beams attached to the wall . loads created by plastic concrete are resisted by a system of radial supports which are attached to the inner concrete shaping forms and are supported by the jacking beams and jacking frames . after a portion of the column wall is poured , the next higher portion of the concrete column wall is formed by advancing the jacking frames and the concrete shaping forms upwardly along the jacking beams and reattaching lower sections of the jacking beams at the top of the jacking beams in order to provide a continuous track . the jacking frames and forms are raised on the jacking beams after a portion of the column wall is poured and the next higher portion of the concrete column wall is to be formed . the present invention also provides a similar radial supported form system enabling the refractory liner to be cast in place . alternatively , a work platform is provided to enable a precast refractory liner to be installed .