cold rolled or hot rolled steel

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A simple field test can determine if a door or frame is galvanized or cold rolled steel, however this test will not determine if the steel is A60, A40 or G90. The Tech Tip can be viewed here.
CRS; steel types
HRS
Levels and Models (covered in ANSI A250.8 (SDI 100) "Recommended Specifications for Standard Steel Doors and Frames") are SDI term aid in the selection and specification pr...
The three most common steel types are cold rolled steel, galvannealed steel, and galvanized steel. Cold Rolled Steel (CRS) is suitable for most interior applications, is uncoated steel a...