SPECIAL-SHAPED ANGLGE STEEL AND RECEIVING FRAME FOR GRATING

摘要

PROBLEM TO BE SOLVED: To provide an angle steel which is manufactured only by hot rolling and firmly bonded to concrete in itself without attaching an accessory such as an anchor and receiving frame for gratings which is made from the same. SOLUTION: (1) This angle steel is a special-shaped angle steel having a line of projection which is overhung to the outside of the apex between two sides Y-1, Y-2 shown in a figure (a) and the projection has a cross-sectional shape which is spreaded toward the outside. (2) This angle steel is the special shaped angle steel having a line of the above-mentioned projection and at least a line of rib 2 which is projected on at least one outside of two sides shown in the figure (b) or (c). (3) This frame is a receiving frame for gratings which is manufactured from the special-shaped angle steel of the above (1) or (2).