JIS G 3192-2021 PDF

Full title and description

St JIS G 3192-2021 — Dimensions, shape, mass and permissible variations of hot-rolled steel sections. This Japanese Industrial Standard specifies standardized section shapes and nominal dimensions, tables of sectional properties (area, theoretical mass, moments of inertia, section moduli, radii of gyration) and permissible dimensional variations and tolerances for common hot-rolled structural shapes (H / I beams, channels, angles, tees, sheet piles and similar rolled sections).

Abstract

JIS G 3192:2021 defines the appearance, geometric definitions, dimensional tables and permissible variations for hot-rolled steel structural sections. The standard provides the numerical tables and tolerance rules needed by mills, fabricators and designers to specify, produce and check standard rolled shapes and to calculate theoretical mass and section properties used in structural design.

General information

• Status: Superseded (replaced by JIS G 3192:2024).
• Publication date: 2021-04-20 (JIS G 3192:2021).
• Publisher: Japanese Standards Association (JSA) / Japanese Industrial Standards body.
• ICS / categories: ICS 77.140.70 — Steel profiles (sections) and related iron & steel product classification.
• Edition / version: JIS G 3192:2021 (edition year 2021).
• Number of pages: 39 pages (technical tables and explanatory notes).

Scope

The standard covers hot-rolled steel structural sections: H‑beams (wide‑flange), I‑beams, C‑channels, equal and unequal angles, T‑sections (including tees cut from beams), sheet piles and other commonly rolled shapes. It specifies dimensional definitions, nominal sizes, tabulated section properties (area, weight per metre, Ix/Iy, Zx/Zy, ix/iy), and the permissible variations and tolerances for dimensions, thicknesses, straightness, camber/sweep, out‑of‑square ends and related geometric parameters used for manufacture and inspection.

Key topics and requirements

• Standardized section tables: nominal dimensions and symbol definitions for H/I beams, channels, angles, tees and sheet piles, with calculated sectional area and theoretical mass (using steel density) and section properties for design.
• Dimensional tolerances: limits for overall depth, flange/leg width, web and flange thicknesses, with size-dependent tolerance bands. Typical tolerances vary by dimension and size (examples: depth and flange width tolerances of a few mm; thickness tolerances in the 0.3–3.0 mm range depending on thickness).
• Length and straightness rules: nominal length tolerances, additional allowances for lengths over specified thresholds, and straightness/sweep (camber) limits stated as percentages of length.
• Out‑of‑square, web eccentricity and concavity limits: maximum permissible out‑of‑square and web concavity/eccentricity values with minimum absolute values where applicable.
• Marking and identification: recommended marking practices for producer identification and section designation to ensure traceability and correct selection.
• Calculation conventions: theoretical mass calculated from sectional area using the standard steel density (used for tabulated kg/m values).

Typical use and users

Primary users are structural engineers, detailers, fabricators, steel mill product engineers, material procurement specialists and quality inspectors. The standard is used when specifying standard rolled shapes for buildings, bridges, industrial structures and general structural work, when ordering stock sections from mills and when verifying as‑supplied section geometry and mass during inspection and fabrication.

Related standards

Commonly referenced alongside JIS G 3192 are material and product standards that define steel grades and delivery conditions, for example JIS G 3101 (rolled steels for general structure), JIS G 3106 (weldable structural steels), JIS G 3466 (steel hollow sections) and other JIS product standards that specify mechanical/chemical requirements — JIS G 3192 itself focuses on geometry and tolerances.

Keywords

JIS G 3192, hot‑rolled sections, H‑beam, I‑beam, channel, angle, tee, sheet pile, dimensional tolerances, section properties, theoretical mass, rolled steel sections

FAQ

Q: What is this standard?

A: JIS G 3192:2021 is the Japanese Industrial Standard that specifies dimensions, sectional properties (area, mass, moments of inertia, section moduli, radii of gyration) and permissible geometric variations for hot‑rolled steel structural sections.

Q: What does it cover?

A: It covers the shape definitions, nominal dimensions and tables for H/I beams, channels, angles, tees and sheet piles, plus the dimensional tolerances and permissible variations (thickness tolerances, straightness, camber/sweep, out‑of‑square, web concavity/eccentricity) used for manufacture and inspection. It does not define mechanical properties of the steel (those are in separate material standards).

Q: Who typically uses it?

A: Steel mills, section producers, structural engineers, fabricators, suppliers/distributors, quality inspectors and specifiers use the standard to select sizes, to verify supplied sections and to prepare procurement and contract specifications.

Q: Is it current or superseded?

A: JIS G 3192:2021 has been superseded by a later edition (JIS G 3192:2024). For current procurement or specification work use the 2024 edition; check edition dates in contracts to ensure the intended version is specified.

Q: Is it part of a series?

A: It is part of the JIS series of steel product standards and is typically used in combination with JIS material standards (for example JIS G 3101, JIS G 3106, JIS G 3466) that define chemical and mechanical requirements while JIS G 3192 defines geometry and tolerances.

Q: What are the key keywords?

A: Hot‑rolled sections, dimensions, tolerances, H‑beam, I‑beam, channel, angle, tee, section properties, theoretical mass.