ISO 1035-3-1980 amd 1981 PDF

Full title and description

ISO 1035-3:1980 — Hot-rolled steel bars — Part 3: Dimensions of flat bars. This International Standard defines the preferred metric sizes (widths and thicknesses) and associated masses for hot-rolled flat steel bars; a published amendment/slip (published 15 January 1981) made a minor modification to the foreword.

Abstract

Specifies dimensions and preferred/second-preference sizes and mass-per-unit-length for metric-series hot-rolled flat bars. The part provides tabulated sizes for common engineering use; tolerances are covered separately (see Part 4).

General information

• Status: Published (International Standard; reconfirmed in past systematic reviews and listed for future revision activity).
• Publication date: First edition published 1980 (Edition 1, 1980-11).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.140.60 (Steel bars and rods; hot-rolled steel bars).
• Edition / version: Edition 1 (1980).
• Number of pages: Official ISO catalogue entry lists the publication as a short (single-sheet) document; other catalogue/vendors list a small multi-page PDF (commonly 1–4 pages depending on formatting).

Scope

Defines the dimensional series for hot-rolled flat steel bars in the metric system: preferred and second-preference widths and thicknesses, nominal masses per metre for each size, and the conventions for specifying these sizes in procurement and technical drawings. The standard does not set chemical or mechanical requirements for the steel itself nor detailed dimensional tolerances (those are covered in ISO 1035-4 and related documents).

Key topics and requirements

• Preferred metric widths and thicknesses for hot-rolled flat bars (tables of first and second preference sizes).
• Nominal mass per metre for each size (used for ordering and mass calculations).
• Conventions for designation and ordering of flat bars (how to state width × thickness and nominal mass).
• Reference to separate tolerancing rules (see ISO 1035-4 for tolerances) and to related parts of the ISO 1035 series for round and square bars.

Typical use and users

Used by steel producers and mills, purchasing/procurement teams, mechanical and structural designers, detailers and draughtsmen, materials engineers, and standards libraries to specify, order and check hot-rolled flat bar sizes and to harmonize mass calculations and item lists across suppliers and users.

Related standards

Part of the ISO 1035 series (hot-rolled steel bars). Closely related parts include ISO 1035-1 (round bars), ISO 1035-2 (square bars) and ISO 1035-4 (tolerances). The series has been subject to systematic review and work to revise/replace the set has been recorded by ISO technical committee activity.

Keywords

hot-rolled, flat bars, steel bars, dimensions, metric series, preferred sizes, mass per metre, ISO 1035, steel stock, bar sizes.

FAQ

Q: What is this standard?

A: ISO 1035-3:1980 is the International Standard that defines the preferred metric dimensions and nominal masses for hot-rolled flat steel bars (Part 3 of the ISO 1035 series).

Q: What does it cover?

A: It covers the size series (widths and thicknesses), preferred/second-preference sizes and nominal mass per metre for hot-rolled flat bars. It does not specify chemical composition, mechanical properties or detailed dimensional tolerances (tolerances are addressed in ISO 1035-4).

Q: Who typically uses it?

A: Steel manufacturers and mills, procurement and inventory teams, designers and draughtsmen, standards managers, and materials or production engineers involved in ordering, specifying or checking flat bar stock.

Q: Is it current or superseded?

A: According to the ISO catalogue entry this edition (1980) remains a published International Standard and has been subject to periodic confirmation reviews; ISO has recorded review/revision activity for the 1035 series and indicated plans for revision activity. A minor amendment/forword modification slip was published in January 1981. Users should check the ISO catalogue or national standards body for the absolute latest status before relying on the standard for new specifications.

Q: Is it part of a series?

A: Yes — ISO 1035 is a multi-part series covering hot-rolled steel bars: Part 1 (round), Part 2 (square), Part 3 (flat) and Part 4 (tolerances), plus subsequent revisions and national adoptions.

Q: What are the key keywords?

A: hot-rolled flat bars, dimensions, metric series, preferred sizes, mass per metre, steel bars, ISO 1035-3.