GOST 8278-83 PDF

Full title and description

GOST 8278-83 — "Швеллеры стальные гнутые равнополочные. Сортамент" (English: "Roll-formed steel equal channels. Dimensions"). The standard specifies the assortment, nominal dimensions and main dimensional and manufacturing requirements for roll‑formed (bent) equal‑flange steel channels produced from hot‑ or cold‑rolled strip.

Abstract

GOST 8278-83 defines the dimensional series, tolerances, length and geometric parameters (including bend radii and flange widths) for equal (symmetrical) roll‑formed steel channels intended for structural and general fabrication use. It applies to products manufactured on profile‑bending equipment from ordinary, quality and low‑alloy carbon steels and establishes accuracy categories and applicable normative references.

General information

• Status: In force (active / действует).
• Publication date: Introduced / came into force 01 January 1984 (designation year 1983).
• Publisher: State Standard of the USSR (Gosstandart) at time of issue; maintained in national collections of GOST standards.
• ICS / categories: Metallurgy — Steel profiles; classifier references correspond to steel profiles (e.g., ISO/ICS grouping 77.140.70 for steel profiles).
• Edition / version: GOST 8278-83 (original issue 1983/introduced 1984); contains later amendments noted in editorial records (amendments in 1988).
• Number of pages: 8 pages (standard document length in common distributions).

Scope

The standard covers roll‑formed (bent) equal‑flange steel channels produced on profile‑bending machines from hot‑ or cold‑rolled strip of ordinary quality carbon steels, quality structural carbon steels and low‑alloy steels. It sets out the assortment (available sizes), permissible geometric deviations and manufacturing accuracy classes, applicable lengths and references to steel grade requirements. It is intended for producers, suppliers and users of channel-section rolled products for construction, manufacturing and general engineering applications.

Key topics and requirements

• Definition of profile type: equal‑flange (symmetrical) roll‑formed channels and their designation.
• Assortment of nominal sizes (profile heights, flange widths and wall/thickness ranges) and standardized dimensional tables.
• Tolerances on height, flange width, wall thickness and angle variations with different accuracy categories (higher, first, ordinary).
• Length requirements and permitted deviations for measured lengths and non‑measured (cut) pieces; typical delivery lengths and permitted share of non‑conforming lengths in a batch.
• Requirements on bend radii and geometric form ensuring profile interchangeability; reference to applicable steel grade standards (e.g., normative link to GOST 11474‑76 for steel grades).
• Manufacturing processes covered: roll‑forming (profile bending) from cold‑ or hot‑rolled strip and the corresponding acceptance criteria.

Typical use and users

Primary users are steel‑profile manufacturers, structural steel suppliers, fabricators, structural and civil engineers, procurement specialists and builders. Typical uses include use as structural members in building frames, bracing, light‑weight beams, racks, vehicle and machinery components, and general metalwork where U‑section channels are required.

Related standards

Standards commonly referenced alongside GOST 8278-83 include the earlier GOST 8278-75 (replaced), related channel-profile standards such as GOST 8281-80 (unequal channels), broader rolled‑section standards (for example GOST 8239 series for I‑beams) and material/steel grade standards (e.g., GOST 11474‑76). The document also cross‑references other metallurgical product standards used in construction and profile manufacturing.

Keywords

GOST 8278-83, roll‑formed channels, bent equal channels, steel channels, channel dimensions, profile assortment, steel profiles, швеллер, равнополочный, сортамент.

FAQ

Q: What is this standard?

A: GOST 8278-83 is the national (GOST) standard that specifies the assortment and dimensional requirements for roll‑formed equal‑flange steel channels.

Q: What does it cover?

A: It covers nominal dimensions, tolerances, lengths, bend radii, manufacturing accuracy classes and the basic requirements for channels made from hot‑ or cold‑rolled strip of ordinary, structural and low‑alloy steels.

Q: Who typically uses it?

A: Manufacturers of roll‑formed channels, steel suppliers, structural engineers, fabricators and construction procurement professionals use the standard to ensure dimensional interchangeability and acceptance criteria for channel products.

Q: Is it current or superseded?

A: GOST 8278-83 is recorded as being in force (действует) with historical amendments; it replaced the earlier GOST 8278-75. Users should check national catalogues for the latest status or any subsequent replacements or consolidated standards.

Q: Is it part of a series?

A: Yes — it is part of the family of GOST standards for rolled steel profiles and is commonly used together with related standards for unequal channels, I‑beams and material (steel grade) standards. Examples include GOST 8281‑80 and references to material standards such as GOST 11474‑76.

Q: What are the key keywords?

A: Roll‑formed channel, equal channel, швеллер гнутый равнополочный, dimensions, assortment, steel profile, GOST 8278‑83.