| 摘要 |
PURPOSE: A prefabricated door is provided to prevent the door from being broken while using the door and to extend the life in use. CONSTITUTION: The prefabricated door(1) comprises fitting grooves(11) formed longitudinally in the middle of doorposts(10), a coupling projection(21) formed to be fitted tightly to the fitting groove(11) and provided with connecting steel members(20) settled to face each other, and a fixed member(31) and a contact member(32) overlapped mutually between the fitting groove(11) of doorposts(10), wherein stoppers(30) are assembled to the doorposts(10) by connecting steel members(20) fixed to both sides between the fixed member(31) and the contact member(32).
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