Weld the subject innovation is to be welded fixed to the bent portion (3) of, by bending the both ends of the bending portion 3 the outer panel (2) forming with said outer panel (2) relates to a gangseongbo steel structure of the vehicle front door ( 6) is formed in one end, the other end is welded fixing side at one side of the predetermined area of which the front panel 5 and the front panel 5, bent inward and the other end is an inner panel 4 and the glass guide 7 a is interposed between the engaging portion and welded fixed to the front and rear longitudinal direction on the inner surface the upper part of the corner bracket (8) and the outer panel (2) to be welded fixed in the reinforcing belt (10) having a predetermined length, the outer by extending the front side of the reinforcing belt 10 is welded to the inner surface of the upper portion of the panel (2) hayeoseo welding the bent extending portion 11 in the inner predetermined area of the corner bracket (8), welded fixed to the outer panel the extended portion and the corner bracket and the front panel the inner panel of the reinforcing belt As the high-supported can be reduced to a minimum in that the outer panel milrimyeo deformation and breakage towards the inner panel is enhanced Oh durability and rigidity of the front door support and sustain the external impact applied to the front door when a vehicle collision effectively reinforcing belt soon as there is at the same time protect the passengers in the cabin safely and to improve the workability can reduce the welding points and effects that can be expected to simplify the work process.
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