GOST 11533-75 PDF

Full title and description

Automatic and semiautomatic arc welding under flux. Welded joints at acute and obtuse angles — main types, design elements and dimensions (with Change No. 1). The standard defines the recommended joint forms, preparation dimensions and design elements for automatic and semi‑automatic submerged‑arc welding where welded parts are arranged at acute or obtuse angles.

Abstract

GOST 11533-75 specifies the principal types of welded joints, the constructive elements (edge preparations, backing/linings, seam geometry) and dimensional limits and tolerances for structures of carbon and low‑alloy steels produced by automatic and semi‑automatic submerged‑arc (under‑flux) welding with parts positioned at acute or obtuse angles. It includes tables and figures that give nominal sizes and permissible deviations and was issued with one recorded amendment (Change No. 1).

General information

• Status: In force (active / действующий).
• Publication date: Approved by the USSR State Committee for Standards on 12 December 1975; date of introduction 1 January 1977; reprint/edition published 1 June 1993 (with Amendment No.1, amendment registered May 1991).
• Publisher: Approved and promulgated by the State Committee for Standards of the USSR (Gosstandart).
• ICS / categories: Welding — ICS group 25.160 (Welding, brazing and soldering); relevant subcategory: welded joints and welds (25.160.40).
• Edition / version: Original designation GOST 11533-75 (1975); Change No. 1 recorded (1991) and a reprint edition of the text issued in 1993.
• Number of pages: Approximately 39 pages (full text with tables and figures in the available reprint edition).

Scope

This standard applies to welded joints of structural elements made of carbon and low‑alloy steels produced by automatic and semi‑automatic submerged‑arc welding where the two parts meet at acute or obtuse angles. It sets out main joint types, edge preparations, seam forms, dimensional rules and permissible deviations for use in design, fabrication and quality control of welded steel structures. The requirements are mandatory for applications that reference this GOST.

Key topics and requirements

• Definition and graphical representation of the principal joint types for corner, T and beveled connections when parts meet at acute or obtuse angles.
• Designation of welding methods and symbols used in the standard (A — automatic under flux; Ac — automatic on steel backing; APS — automatic with pre‑overlay; P — semi‑automatic under flux; PS, PPSh etc.).
• Tables of nominal dimensions and limiting deviations for constructive elements (edge preparations, root face, gap, weld reinforcement, angles and seam geometry) organized by material thickness ranges and joint designations.
• Requirements for allowable tolerances on preparation dimensions and seam form depending on welding method and thickness; notes on exceptions when special automatic submerged‑arc techniques change certain nominal dimensions.
• Reference to the mandatory nature of requirements where the standard is invoked by design, and cross‑references to related GOSTs covering other welding processes and seam types.

Typical use and users

Used by structural and welding engineers, fabrication shops, welding procedure developers, quality/inspection personnel, standards and documentation teams, and technical libraries. Typical applications include design and manufacture of welded steel structures, pressure equipment and large assemblies where submerged‑arc welding is used and joint geometry must conform to standardized dimensions and tolerances.

Related standards

Closely related GOSTs and documents include other joint/seam standards such as GOST 11534-75 (manual arc welding joint forms), GOST 5264-80 (manual arc weld seams), GOST 14771-76 (arc welding in shielding gas) and several standards on weld symbols and seam types; ISO/EN welding joint preparation standards (for example ISO 9692 series) are also commonly cross‑referenced in design practice.

Keywords

submerged arc welding; under‑flux welding; welded joints; corner joints; T‑joints; bevel preparation; seam geometry; design dimensions; welding tolerances; carbon steel; low‑alloy steel; GOST 11533-75; welding standards; ICS 25.160.40.

FAQ

Q: What is this standard?

A: GOST 11533-75 is a Soviet (GOST) standard that defines the main types, constructive elements and dimensions of welded joints produced by automatic and semi‑automatic arc welding under flux when parts are arranged at acute or obtuse angles. It includes dimension tables, tolerances and joint designations.

Q: What does it cover?

A: It covers joint forms (corner, T, bevels, single‑ and double‑bevel preparations), edge and seam dimensions, permissible deviations, and notation of specific submerged‑arc welding methods (A, Ac, APS, P, PS, PPSh). It also notes cases where special automatic methods alter specified dimensions.

Q: Who typically uses it?

A: Structural designers, welding engineers, fabrication workshops, procedure writers and inspectors who need standard joint geometries and dimensional rules for submerged‑arc welding of carbon and low‑alloy steels. Technical libraries and standards managers in organizations that reference GOST welding rules also use it.

Q: Is it current or superseded?

A: As published information indicates, GOST 11533-75 was approved in 1975, introduced 1 January 1977, had its term‑limit removed by a 1991 review and was reprinted in 1993 with Amendment No.1. Several standards repositories list it as "in force" (действующий). There is no widely reported full supersession noted in the cited registries. Users should check their national/regional standards database for the very latest legal/applicability status before relying on it for regulated work.

Q: Is it part of a series?

A: Yes — it forms part of the family of GOST standards on welded joints and welding processes (examples: GOST 11534-75 for manual arc joints, GOST 5264-80 for manual arc seams, and others). It is typically used together with complementary GOSTs and with international documents on joint preparation where applicable.

Q: What are the key keywords?

A: Submerged arc welding, under‑flux welding, welded joints, corner joints, bevel preparation, seam dimensions, welding tolerances, carbon steel, low‑alloy steel, joint types, GOST 11533-75.