GOST 30245-2003 PDF

Full title and description

GOST 30245-2003 — "Профили стальные гнутые замкнутые сварные квадратные и прямоугольные для строительных конструкций. Технические условия" (English title: "Steel bent closed welded square and rectangular section for building. Specifications"). The standard specifies technical conditions, dimensional series (sortament), manufacturing, acceptance, testing, marking, packaging, transportation and storage for bent, closed, welded square and rectangular steel profiles intended for building and structural use.

Abstract

This interstate (GOST) standard (introduced 1 October 2003) establishes requirements for production and quality control of bent, closed, longitudinally welded square and rectangular steel profiles used in building structures. It covers profile geometry and tolerances, allowed steel grades and sheet supply, manufacturing method (forming from circular tubular section with longitudinal weld and roll-forming to square/rectangular cross-section), mechanical and dimensional tolerances, acceptance rules, test methods, marking, packing, transportation and storage.

General information

• Status: Listed as an operative / extended interstate standard (introduced as a national standard of the Russian Federation). It has been maintained/extended for use in the national standards databases (users should verify current regulatory status with the national standards/regulator before legal/compliance use).
• Publication date: Introduced into force 1 October 2003 (approved by Госстрой Russia 30 June 2003; accepted by MNTKS 22 October 2003).
• Publisher: Interstate (GOST) standard prepared by Central Research and Design Institute of Building Metal Structures named after N.P. Melnikov (TsNIIPSK); introduced in Russia by Gosstroy. Distributed via national standards publications/registries.
• ICS / categories: ICS 77.140.70 (steel structures / structural steel products).
• Edition / version: GOST 30245-2003 (first introduced edition, with subsequent amendments/updates recorded in standards databases).
• Number of pages: Approximately 19–20 pages (published text and tables of sortament and technical requirements).

Scope

The standard applies to bent, closed, welded square and rectangular steel profiles intended for building steel structures (columns, beams, trusses, braces, frames and other load-bearing or enclosing elements). It covers profiles manufactured by forming a circular tubular section with a longitudinal weld and then compressing/roll-forming into square or rectangular profiles. Mandatory quality requirements and key clauses are identified in the standard text (sections addressing dimensional tolerances, wall thickness, welding quality, acceptance and testing).

Key topics and requirements

• Definition of profile geometry and cross-section drawings (square and rectangular profiles) and complete sortament (standard sizes, cross-sectional areas, section moduli and mass per metre).
• Permissible steel grades and requirements for the sheet/coil supply used to form profiles (references to applicable GOSTs for sheet steel and rolled products).
• Manufacturing method: forming from circular tubular blank with longitudinal weld and subsequent roll-forming into square/rectangular section; welding and seam quality requirements.
• Dimensional tolerances: permissible deviations for height/width (e.g., ±1.0% for profiles up to 100 mm, tighter tolerance for larger sizes), corner radii rules (depend on wall thickness t), and angularity tolerance (deviation from 90° ≤ ±1°30′).
• Length and delivery forms: standard lengths normally 6.0–12.0 m, by agreement 4.0–13.0 m; non‑measured, measured and multiple-of‑measured lengths permitted; maximum positive length deviation for measured lengths +60 mm.
• Wall thickness tolerances tied to the tolerances of the original sheet/coil (per referenced sheet-rolling standards); special provisions for bend areas.
• Acceptance rules and test methods: sampling, mechanical and dimensional control, non-conforming product handling and mandatory clauses on quality (specific paragraph numbers identify mandatory requirements in the text).
• Marking, packing, transportation and storage requirements in accordance with general metal product practice and referenced GOSTs.

Typical use and users

Primary users are structural and civil engineers, steel fabricators and manufacturers of structural steelwork, procurement and quality departments in construction companies, building code authorities and standards practitioners in Russia and CIS countries. Typical uses include framed building structures, secondary structural members, columns, purlins, truss members, bracings and other load-bearing or non-load-bearing structural elements where bent closed welded square or rectangular hollow profiles are required.

Related standards

Commonly referenced and related documents include the previous edition GOST 30245-94 (replaced), and other GOSTs cited in the standard for raw materials and testing such as standards for sheet and rolled steel (e.g., standards for hot‑rolled sheet/coil and sheet supply), welding standards (weld types and control), measuring instruments and acceptance/packaging (examples: GOST references for rolled sheet, steel grades, welding practice, packaging and testing procedures). Users should consult the normative references listed in clause 2 of the standard for the exact list of related GOST documents.

Keywords

bent closed welded profile; square hollow section; rectangular hollow section; welded tube; structural profile; sortament; profile tolerances; steel profiles for construction; manufacturing and acceptance; GOST 30245-2003.

FAQ

Q: What is this standard?

A: GOST 30245-2003 is an interstate technical standard that sets specifications and technical conditions for bent, closed, welded square and rectangular steel profiles used in building and structural applications.

Q: What does it cover?

A: It covers profile geometry and standard sizes (sortament), manufacturing method (from tubular blank with longitudinal weld and roll-forming), allowed steel raw materials, dimensional and angular tolerances, wall thickness rules, welding quality, acceptance and test procedures, marking, packing, transportation and storage.

Q: Who typically uses it?

A: Structural and civil engineers, steel-profile manufacturers and fabricators, construction procurement and quality control teams, and standards/technical regulators in Russia and other countries that apply GOST norms (CIS region).

Q: Is it current or superseded?

A: The document was introduced 1 October 2003 and replaced the previous GOST 30245-94. Public standards databases list GOST 30245-2003 as maintained/extended for use. National regulatory applicability and any voluntary/mandatory status can change over time; for regulatory or compliance purposes, verify the current legal status and any later amendments or replacements with the national standards body or official standards registry before use.

Q: Is it part of a series?

A: It belongs to the family of GOST and construction/steel product standards (group/ICS covering steel structural products). The standard cross-references numerous GOSTs for raw materials, welding and testing; designers commonly use it alongside other national standards for steel grades, welding and transport/packaging.

Q: What are the key keywords?

A: Bent closed welded profile, square hollow section (SHS), rectangular hollow section (RHS), welded tubular profile, sortament, dimensional tolerances, construction steel profiles, GOST 30245-2003.