Stripes, checkers or other variations are often used. Black & White – or a combination of the two are used to designate traffic and housekeeping markings.It may contain a combination of purple and yellow. Green – indicates either the location of safety equipment such as first aid materials or conveys safety information. ![]() This is not an accurate method and it may vary depending on the type of steel being used. At 1000 degrees Celsius, it turns a whitish-red color. ![]() At 900 degrees Celsius, it turns yellowish-red.
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