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2. Anti-slip grating - Wikipedia

   en.wikipedia.org/wiki/Anti-slip_grating

   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 ...

3. Youngstown Sheet and Tube - Wikipedia

   en.wikipedia.org/wiki/Youngstown_Sheet_and_Tube

   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.

4. International Steel Group - Wikipedia

   en.wikipedia.org/wiki/International_Steel_Group

   In June 2004, ISG acquired the assets of bankrupt Georgetown Steel for $18 million in cash. [1] [8] In July 2004, ISG acquired an idled hot-briquetted iron facility in Point Lisas, Trinidad and Tobago for $18 million in cash. It was restarted in November 2004. [1] [9] In April 2005, the company was acquired by Mittal Steel Company. [10]

5. Worthington Enterprises - Wikipedia

   en.wikipedia.org/wiki/Worthington_Enterprises

   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 ...

6. Economy of Youngstown, Ohio - Wikipedia

   en.wikipedia.org/wiki/Economy_of_Youngstown,_Ohio

   [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]

7. Grating - Wikipedia

   en.wikipedia.org/wiki/Grating

   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.