Guidelines for flatness, lateral warpage, and surface finish. Mass Calculation:
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If you search for "JIS G 3193," you will find two very different things. You need to know which one you mean: Guidelines for flatness, lateral warpage, and surface finish
The PDF includes diagrams showing exactly where to measure thickness, depth, and straightness. Common mistakes in quality control arise from measuring at the wrong location (e.g., measuring flange thickness at the toe instead of the center). Using an obsolete tolerance table could lead to
is a Japanese Industrial Standard (JIS) titled "Dimensions, mass and permissible variations of hot rolled steel sections." It is administered by the Japanese Industrial Standards Committee (JISC) and is widely used across Asia and in international markets where Japanese steel grades (such as SS400 or SM490) are utilized.
While many steel standards focus solely on chemical composition or tensile strength (mechanical properties), JIS G 3193 is distinct because it focuses on the of the steel. It answers the questions: