The standard provides a uniform framework for measuring and certifying the physical properties of hot-rolled steel. Unlike other JIS standards (such as ), which focus on chemical composition and mechanical strength, JIS G 3193 specifically targets geometrical accuracy and tolerances .
JIS G 3193 applies to a wide range of hot-rolled steel products, but it does apply to hot-rolled steel flat bars. It is often referenced in conjunction with material-specific standards such as: JIS G 3101 (General Structural Steel)
for mild steel). Instead, JIS G 3193 works as a partner standard that dictates exactly how thick, wide, flat, and heavy those materials are allowed to be. 🔑 Key Areas Covered in the Document If you pull up a verified JIS G 3193 PDF , you will find several critical technical sections: Dimensional Expressions:
is the Japanese Industrial Standard that defines the dimensions, shape, mass, and permissible variations for hot-rolled steel plates, sheets, and strips. jis g 3193 pdf
The 2019 revision introduced changes regarding the definition of "strip" and updated tolerance tables to align more closely with international standards (like ISO 4995). Using an outdated PDF could lead to non-compliant fabrication or rejected material shipments.
If a buyer receives a shipment of steel sheets that are slightly wavy or narrower than specified, JIS G 3193 acts as the legal arbiter. If the variance falls outside the standard's tables, the shipment is classified as non-compliant reject material. Summary of Common Companion Standards
Standard widths are provided in tables (e.g., Table 2), with measurement protocols defined for both mill-edged and cut-edged products. 3. Permissible Variations (Tolerances) The standard provides a uniform framework for measuring
You order an SS400 H-beam. JIS G 3101 defines its strength. JIS G 3193 defines its shape. You need both standards to fully specify the product.
If you are working in engineering, manufacturing, or steel procurement, you have likely come across references to the JIS G 3193 standard. Published by the Japanese Standards Association (JSA)
Provides quality assurance (QA) teams with precise guidelines on where and how to measure plate thickness (e.g., distance from the mill edge). Summary of Benefits for Manufacturers Engineering Benefit Strict Thickness Control It is often referenced in conjunction with material-specific
It is important to distinguish between "unofficial" mirrors and the authoritative source. While you may find scanned copies on engineering forums, these are often:
It governs the physical limits and accuracy of the product, not its chemical composition or mechanical properties (which are covered by specific grade standards like JIS G 3101, G 3131, etc.). 2. Scope of the JIS G 3193 Standard The standard applies to: Hot-rolled steel plates.