: If an engineer designs a part assuming a 10mm thickness, they need to know the maximum "minus tolerance" allowed so the part doesn't fail under stress.
The is the foundational Japanese Industrial Standard that defines the dimensions, shapes, mass, and permissible dimensional tolerances for hot-rolled steel plates, sheets, and strips. If you are sourcing structural steel from Asian manufacturers or verifying engineering designs, downloading or referencing a JIS G3193 PDF is necessary to ensure dimensional accuracy, structural compliance, and quality control. jis g3193 pdf