To provide a columnar material formed with an outer surface coating layer containing it as a main material by forming foam glass particles by utilizing a waste material of glass.

The columnar material is formed by incorporating a metal columnar material body 1 and foam glass particles on an outer surface of the body as main materials, and the main material is integrally covered with a foamed glass layer 2 obtained by binding it with a binding material such as synthetic resin, cement or the like. Thus, the columnar material is formed in a predetermined length, and a supporting implement such as a bracket or the like is mounted at a predetermined interval in its lengthwise direction and used for a handrail of a stair or a handrail of a veranda, a balcony or the like or a coping.