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A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching , ram-raiding and lock picking , and prevent crimes such as burglary and home invasions .
Steel doors are another major type of residential front doors; most of them come with a polyurethane or other type of foam insulation core – a critical factor in a building's overall comfort and efficiency. Steel doors mostly in default comes along with frame and lock system, which is a high cost efficiency factor compared to wooden doors.
A third brother, William H. Wagner, joined the company to run this operation. In 1903 Sidney Hollow Ware was sold back to Smith. By 1913 Wagner was distributing its products globally. [1] The company said in its early advertisements: We do not strive to manufacture hollow ware as cheaply as possible, but as good as it can be made.
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A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology. HSS members can be circular, square, or rectangular sections, although other shapes such as elliptical are also available.
The process is suitable for repeatable production of net shape components from a variety of different metals and high performance alloys. Although generally used for small castings, this process has been used to produce complete aircraft door frames, with steel castings of up to 300 kg and aluminium castings of up to 30 kg.
President-elect Donald Trump's "border czar" Tom Homan vowed to build "family facilities" to detain and deport the massive number of migrants who have entered the country illegally in recent years ...
Around 1928, the company reformed as Metal Propellers Ltd, with board members who also had positions with Saunders-Roe, Spartan Aircraft Ltd and British Airways. Watts remained as chief designer from 1925-7 but moved to The Airscrew Company in 1932. Metal Propellers continued to advertise until at least December 1930. [1]
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