作者: Kenneth Sampson
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摘要: A force resistant door and window framing system has blast, forced entry, ballistic frame sections each formed of a single basic monolithic, homogenous steel component. Each section is extruded or drawn through die to provide the desired cross sectional shape, incorporating features for precluding whether by hand, firearm, at least limits strength structure. The (jamb header doors, stile, header, sill windows) are then welded their mating ends form single, rigid structure, with an additional interior stop provided within frame. present invention far superior such structures prior art which relatively large number stock components, thus requiring extensive linear welds resulting in considerably heavier yet weaker