GOST 23518-79 PDF

Full title and description

GOST 23518-79 — "Arc welding in protective gases. Welded joints. Main types, design elements and dimensions" (Russian: «Дуговая сварка в защитных газах. Соединения сварные под острыми и тупыми углами. Основные типы, конструктивные элементы и размеры»). The standard specifies standardized joint forms, prepared-edge shapes, seam geometry and dimensional limits for welded joints produced by gas‑shielded arc welding of steels and iron‑nickel and nickel‑base alloys.

Abstract

This interstate standard defines the principal types of welded joints at acute and obtuse angles for gas‑shielded arc welding (T, corner, butt, single‑ and double‑bevel, removable/remaining backing, etc.), the constructive elements of those joints, nominal dimensions and permissible deviations, and standard symbols and method notations used for different gas‑shielded welding processes.

General information

• Status: Active (standard in force; reprinted editions issued).
• Publication date: Introduced 01 January 1980 (adopted 1979; designation year 1979).
• Publisher: Originally adopted by the USSR State Committee for Standards (Gosstandart); reprints and commercial editions have been issued (reprint/edition noted 2011 by Standardinform / Interstandard).
• ICS / categories: 25.160.40 (Welded joints and welds).
• Edition / version: Original designation GOST 23518-79 (introduced 1980); reprints and later published editions (notably a 2011 reprint/edition).
• Number of pages: 28 (typical printed/pdf edition).

Scope

Applies to welded joints of steels and alloys based on iron‑nickel and nickel produced by arc welding in shielding gases. The standard covers joints made at acute and obtuse angles and establishes main joint types, preparation forms, seam cross‑sectional shapes, dimensional formulas for sizes (as functions of base plate thickness) and allowable tolerances for use in design drawings, fabrication instructions and quality documentation.

Key topics and requirements

• Standardized joint classifications and symbols for gas‑shielded arc welding (corner, T, butt, single‑ and double‑sided welds, with/without backing, etc.).
• Prepared‑edge geometries and associated dimensional tables defining weld leg sizes, root face, root opening, groove angles and related tolerances (nominal dimensions expressed as functions of part thickness S).
• Designation/notation of welding methods commonly used in the standard: IN, INP, IP, UP (notation for inert/active gas, consumable/non‑consumable electrodes, with/without filler metal).
• Limits and permissible deviations for key constructive elements of the joint and seam geometry to ensure interchangeability and predictable weld quality.
• Illustrative diagrams and tables (tables 1–20 in the text) showing dimensioning for ranges of material thicknesses and connection angles.

Typical use and users

Used by welding engineers, design engineers, mechanical and structural fabricators, welding procedure writers, quality and inspection personnel, standards librarians and technical training organizations. It is referenced in fabrication drawings, welding procedure specifications (WPS), acceptance criteria and for communication of joint geometry between designers and production.

Related standards

Related welding and joint standards include other GOSTs and national/international welding standards (examples frequently listed alongside GOST 23518-79: GOST 14771 (arc welding in shielding gas), GOST 5264 (manual arc welding joints), GOST R ISO series on welding symbols and practices, and various ISO/EN welding standards adopted as national documents). For cross‑references and harmonized documents see listings in commercial and national standards catalogues.

Keywords

gas‑shielded arc welding, GMAW/MAG/TIG (process families), welded joints, joint types, groove dimensions, weld symbols, joint preparation, groove angle, root face, root opening, tolerances, steels, nickel alloys.

FAQ

Q: What is this standard?

A: GOST 23518-79 is an interstate (GOST) standard that specifies main types, constructive elements and dimensions of welded joints made by arc welding in protective (shielding) gases.

Q: What does it cover?

A: It covers joint forms for acute and obtuse angles, prepared‑edge shapes, seam cross‑section profiles, nominal dimensions and allowable deviations for steels and iron‑nickel / nickel alloys when welded in shielding gases; it also defines common method notations used for those gas‑shielded welding processes.

Q: Who typically uses it?

A: Welding and design engineers, fabricators, quality/inspection teams, procedure writers and educators—any organization or individual involved in preparing, manufacturing, inspecting or specifying welded fabrications that use gas‑shielded arc welding.

Q: Is it current or superseded?

A: The document GOST 23518-79 was introduced on 01 January 1980 and has been reprinted and kept in force in later reissues; editions/reprints (notably a 2011 reprint/edition) exist and the standard is commonly listed as active in Russian standards catalogues. Consult the national standards registry or an authorized distributor for the absolute current status and any replacement editions before use.

Q: Is it part of a series?

A: It is part of the family of GOST/GOST‑R welding standards covering welding methods, joint types, symbols and dimensional requirements; it is classified under ICS 25.160.40 (welded joints and welds) and is often referenced alongside other GOSTs and ISO-adopted welding standards.

Q: What are the key keywords?

A: gas‑shielded arc welding, welded joints, joint types, groove dimensions, weld preparation, weld symbols, GOST 23518-79.