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GB/T 43412-2023Recommended process for resistance spot welding on sheet metal (English PDF)

金属薄板电阻点焊推荐工艺规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 27, 2023

Implementation date

June 1, 2024

Scope

GB/T 43412-2023 is the English-translated version of 金属薄板电阻点焊推荐工艺规范.

GB/T 43412-2023 is the Chinese national recommended process specification for resistance spot welding of metal sheet.

It sets out the symbols, general requirements, design requirements, quality requirements, the welding process, inspection and test methods and the repair of weld-spot defects, and carries thirteen informative annexes: daily and periodic checks of the welding equipment, magnetic spot welding equipment, equipment verification, electrodes, spot-weld sealants, spot spacing and edge distance, recommended parameters for common joints, a process specification template, common defects and their countermeasures, removal of spot marks, indentation depth measuring devices, fatigue testing and sealing testing.

It defines magnetic spot welding and seal spot welding, and applies to stainless steel, carbon steel, aluminium alloy and other metal sheet from 0.6 mm to 5 mm thick. Issued on 27 November 2023, it has applied since 1 June 2024.

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Document preview — GB/T 43412-2023

National Standard of the People's Republic of China

ICS: 25.160.10
Classification: J 33

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceI
1 Scope
2 Normative references
3 Terms and Definitions
4 symbols
5 General requirements
6 Design requirements
7 Quality Requirements
8 Welding process
9 Inspection and test methods
10 Solder joint defect repair
Appendix A (informative) Daily inspection and periodic inspection of resistance spot welding equipment
Appendix B (informative) Technical requirements for magnetic spot welding equipment
Appendix C (informative) Resistance spot welding equipment verification
Appendix D (informative) Resistance spot welding electrode
Appendix E (informative) Technical requirements for sealing spot welding sealants
Appendix F (informative) Resistance spot welding spacing and margin design requirements
Appendix G (informative) Recommended process parameters for common joints in resistance spot welding
Appendix H (informative) Resistance spot welding process specification template
Appendix I (informative) Common defects and countermeasures of resistance spot welding
Appendix J (Informative) Recommended Process for Solder Joint Mark Elimination
Appendix K (informative) Technical requirements for resistance spot welding indentation depth measuring device
Appendix L (informative) Fatigue test
Appendix M (informative) Sealing test
Reference

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document is proposed and coordinated by the National Welding Standardization Technical Committee (SAC/TC55).

1 Scope

This document specifies the general requirements, design requirements, quality requirements, welding processes, test and inspection methods and welding requirements for resistance spot welding of metal sheets. Recommended process specifications for defect repair, etc.

This document is suitable for resistance spot welding of stainless steel, carbon steel, aluminum alloy and other metal sheets with a thickness of 0.6mm~5mm.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 3375 Welding terminology

GB/T 4842 Argon

GB/T 8366 Resistance welding Mechanical and electrical requirements for resistance welding equipment

GB/T 9445 Qualification and certification of non-destructive testing personnel

GB 9448 Welding and cutting safety

GB/T 15578 Safety requirements for resistance welding machines

GB/T 19805 Welding operator skills assessment

GB/T 19866 General principles for welding procedure regulations and qualifications

GB/T 19867.5 Resistance welding welding process specifications

GB/T 19869.1 Welding procedure qualification tests for steel, nickel and nickel alloys

GB/T 25343.1 Welding of rail vehicles and their components for railway applications Part 1: General principles

GB/T 25343.3 Welding of rail vehicles and their components for railway applications Part 3: Design requirements

GB/T 26955 Destructive testing of welds on metallic materials Macroscopic and microscopic inspection of welds

GB/T 32259 Non-destructive testing of welds and visual inspection of fusion joints

GB/T 39081 Cross tensile test method for resistance spot welding and projection welding joints

GB/T 39082 Vickers hardness test method for resistance spot welding, projection welding and seam welding joints

GB/T 39167 Tensile shear test method for resistance spot welding and projection welding joints

GB/T 39165 Peeling and gouging test methods for resistance spot welding and projection welding joints

3 Terms and definitions

The terms and definitions defined in GB/T 3375, GB/T 19866, GB/T 8366 and the following apply to this document.

3.1 Magnetic spot welding

By adding a magnetic control device during resistance spot welding, the interaction between current and magnetic field is used to perform spot welding.

3.2 Seal spot weld

A spot welding process that uses spot welding sealant to perform resistance spot welding and form a sealing structure.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 15578

Similar standards

GB/T 44509-2024|GB/T 47561-2026|GB 9448-2025|GB/T 10859.1-2025|GB/T 13815.1-2025|GB/T 2550-2025

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