If you’re looking for the PDF for an ongoing project, always check the . As of 2026, the valid version is JIS G 3193:2025 . Older editions (2008, 2019) are interesting for historical reference but should not be used for new orders unless specifically agreed. The official JIS G 3193 PDF is the only document that guarantees you are seeing the legally correct values, as confirmed by the Japanese government and the Japanese Industrial Standards Committee.
The current JIS G 3193:2025 is aligned with the international standard (Hot‑rolled steel plates — Tolerances on dimensions and shape), with some technical modifications to suit actual trading practices in Japan. These modifications are clearly marked with double lines or dotted underlines in the document, and a comparison table is provided in the informative annex.
While the standard defines physical requirements, it is typically used in conjunction with specific material product standards (like JIS G 3101 for structural steel) to ensure the steel meets both mechanical and dimensional quality benchmarks. Key Technical Sections
Using the mass tables in the PDF, you can precisely calculate freight costs. If a JIS beam weighs 56.2 kg/m, and you need 1,000 meters, you require exactly 56.2 tons—not the nominal weight.
For sheets and plates supplied in cut lengths, the standard defines the maximum allowable deviation over the nominal length. Typically, the standard only allows positive deviations (meaning the plate can be slightly longer than ordered, but not shorter) to prevent material deficits during fabrication. 4. Flatness and Camber jis g3193 pdf
💡 Always verify the Revision Date . The 2019 version (e.g., JIS G 3193:2019) is the current standard, replacing the 2008 and 1990 editions. If you tell me what you're checking, I can help further: Specific tolerance tables (e.g., for 10mm plates) Comparison with ISO or ASTM standards Mass calculations for specific dimensions
Disclaimer: This article is for informational purposes only. Always refer to the official Japanese Standards Association (JSA) documentation for legal binding specifications and the most current revisions.
The Japanese Standards Association (JSA) actively enforces copyright protection on all JIS standards. Many websites offering a free "jis g3193 pdf download" are either:
: Specifies that dimensions for plates and sheets must be expressed in millimeters (thickness × width × length), while strips only require thickness and width. Permissible Variations (Tolerances) : Outlines strict limits for: If you’re looking for the PDF for an
| Section | Description | |---------|-------------| | | Applicable steel types and shapes | | Dimensions | Standard sizes for each shape (thickness, width, diameter) | | Shape tolerances | Straightness (bowing), flatness (for plates), out-of-square (sheared plates) | | Mass tolerance | Permissible deviation from theoretical mass (usually ±5% for plates/strips, ±3–6% for sections) | | Length tolerances | Fixed vs. random length limits | | Inspection | How to measure thickness, width, camber, etc. |
For rectangular sheets, the standard defines how much the corners may deviate from a perfect 90-degree angle. This is usually expressed as a ratio (e.g., less than 0.5% of the diagonal length).
Crucially, it is not a material grade specification itself. Instead, it is a used in conjunction with specific material standards. For example, when purchasing popular structural steel grades like JIS G 3101 (SS400) or commercial steel sheets like JIS G 3131 (SPHC), the buyer relies on JIS G 3193 to govern the material's actual physical thickness, width, length, flatness, and edge conditions.
Generally thicker sections used in heavy construction. Steel Sheets: Thinner flat products. Steel Strips: Coiled hot-rolled steel. The official JIS G 3193 PDF is the
: Standards for flatness, out-of-squareness, and camber (lateral curvature). Mass Calculation
If you are sourcing steel from a Japanese mill (Nippon Steel, JFE, or Kobe Steel) to a country using ASTM or EN standards, you must check compatibility. The PDF acts as a quick-reference translation guide.
Various Chinese websites (e.g., biaozhuns.com, renrendoc.com) offer free JIS G 3193 PDF downloads. However, these are typically scanned copies of older editions (e.g., JIS G 3193:2008 or 2019) and may be incomplete or of poor quality. While convenient for a quick look, they are . Always use the official PDF for real manufacturing, quality control, or contract work.