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Anti-slip steel grating is a type of bar grating. Steel bar grating is manufactured in a variety of methods. Welded bar grating consists of load bars electrically fuse welded to cross bars. Pressure-locked bar grating, or swaged grating, is where steel rods are forced through and locked in load bars. Riveted bar grating is where the load bars ...
The Youngstown Sheet and Tube Company, based in Youngstown, Ohio, was an American steel manufacturer.Officially, the company was created on November 23, 1900, when Articles of Incorporation of the Youngstown Iron Sheet and Tube Company were filed with the Ohio Secretary of State at Columbus.
Worthington Enterprises, Inc. is a global diversified metals manufacturing company based in Columbus, Ohio.It is a steel processor and manufacturer of pressure vessels, such as propane, oxygen and helium tanks, hand torches, refrigerant and industrial cylinders, camping cylinders, exploration, recovery and production products for global energy markets; water system tanks for storage, treatment ...
Republic Steel is an American steel manufacturer that was once the country's third largest steel producer. It was founded as the Republic Iron and Steel Company in Youngstown, Ohio in 1899. After rising to prominence during the early 20th Century, Republic suffered heavy economic losses and was eventually bought out before re-emerging in the ...
The period of the grating is the inverse of the spatial frequency, measured in distance (e.g. 0.1 mm). Duty Cycle is the relative thickness of high and low lines. The duty cycle is the ratio of the width of the low line (black or opaque) to one whole grating period.
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Up until the post Civil War era, most of this valley was farm land and small surface or near-surface mining areas. Starting with the industrial boom that the Civil War demanded, the area rich in coal (a key industrial component for steel and iron making and thus the linchpin for most major industrial concerns) grew rapidly along the rivers of the region.
[17] [18] In the wake of the steel plant shutdowns, the community lost an estimated 40,000 manufacturing jobs, 400 satellite businesses, $414 million in personal income, and from 33 to 75 percent of the school tax revenues. [19] The Youngstown area has yet to fully recover from the loss of jobs in the steel sector. [20]
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