To provide a mold for forming a rack having a long service life when manufacturing a tubular member with a rack which are used for a steering equipment or the like of a car, wherein a part of the length of a steel tube as a raw material is pressed to make a part of an outer peripheral surface flat and a mandrel is pressed into a steel tube to carry out ironing in such a manner that a mold for forming a rack is kept contacted to the flattened part of the surface.

The tooth die part of a mold 21 for forming a rack is formed by alternatively laminating a tooth die bottom plate 24 having a thickness between both corners of one tooth form bottom in a tooth female die and a tooth die projected plate 25 having a thickness between adjacent corners of a tooth form bottom 23, 231 or 232 in a tooth female die and another tooth form bottom 23, 231 or 232 adjacent to the tooth form bottom.