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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3429-2025 | English | 439 |
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Wire rods for welding
| Valid |
GB/T 3429-2025
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| GB/T 3429-2015 | English | 319 |
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Wire rods for welding
| Valid |
GB/T 3429-2015
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| GB/T 3429-2002 | English | 399 |
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Wire rod for electrode
| Obsolete |
GB/T 3429-2002
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| GB/T 3429-1994 | English | 199 |
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Wire rods for electrode
| Obsolete |
GB/T 3429-1994
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| GB 3429-1982 | English | 199 |
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Carbon steel wire rods for welding electrodes
| Obsolete |
GB 3429-1982
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PDF similar to GB/T 3429-2025
Basic data | Standard ID | GB/T 3429-2025 (GB/T3429-2025) | | Description (Translated English) | Wire rods for welding | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H44 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 22,292 | | Date of Issue | 2025-08-29 | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 3429-2015, GB/T 33958-2017, GB/T 33964-2017 | | Issuing agency(ies) | State Administration for Market Regulation; Standardization Administration of China | GB/T 3429-2025: Wire rods for welding---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3429-2025
ICS 77.140.60
CCSH44
National Standards of the People's Republic of China
Replace GB/T 3429-2015, GB/T 33958-2017, GB/T 33964-2017
Welding steel wire rod
Published on 2025-08-29
Implemented on 2026-03-01
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of Contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Brand designation method 1
5.Order Details 2
6.Manufacturing Process 2
7 Technical Requirements 2
8.Test Methods 3
9.Inspection Rule 11
10 Packaging, labeling, and quality certificate 11
Appendix A (Normative) Specifications for Mechanical Properties of Wire Rods 12
Appendix B (Informative) Table 13.Comparison of Wire Rod Grades with Relevant Standards in this Document
Reference 17
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 supersedes GB/T 3429-2015 "Steel Wire Rods for Welding" and GB/T 33958-2017 "Steel Wire Rods for Submerged Arc Welding Wires for Pipeline Steel".
GB/T 33964-2017 "Steel Wire Rods for Solid Weathering Steel Welding Wire". This document is based on GB/T 3429-2015 and integrates...
The contents of GB/T 33958-2017 and GB/T 33964-2017.Compared with GB/T 3429-2015, except for structural adjustments and editorial changes...
Aside from the modifications, the main technical changes are as follows.
---The scope of application has been changed (see Chapter 1, Chapter 1 of the.2015 edition);
---Added a method for representing trademarks (see Chapter 4);
---The order details have been changed (see Chapter 5, Chapter 3 of the.2015 edition);
---The delivery status of the wire rod has been changed (see 6.2, 5.3 in the.2015 version);
---The grades H11Mn2Si, H08MnMo, H08Mn2Mo, and H10MnCrNiCu have been deleted (see Table 1 in the.2015 edition);
---Added grades H06Mn2SiTi, H07Mn2Si, H07Mn2SiA, H07Mn2SiE, H08MnMoTiB.
H08MnSiNiCu, H08MnSiCrCuRE, H10MnSiCrCu, H08MnSiCrNiCu, H08MnSiCrNiCuA,
H10MnCrNiCuA, H10MnCrNiCuE, H10Mn2CrNiCu, H10Mn2NiCuMo, H35MnSiCr (see Table 1);
---The content ranges for some grade elements have been changed (see Table 1, Table 1 in the.2015 edition);
---The surface quality requirements for wire rods have been changed (see 7.2.2, 5.4.2 in the.2015 version);
---Dimensions, shape, and weight have been changed (see 7.3, Chapter 4 of the.2015 edition);
---Special requirements have been changed (see 7.4, 5.5 in the.2015 version);
---Batch rules have been changed (see 9.2, 7.2 in the.2015 version).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Iron and Steel Association.
This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183).
This document was drafted by. Qingdao Special Steel Co., Ltd., Jiangsu Shagang Steel Co., Ltd., Jiangsu Yonggang Group Co., Ltd., and Shougang Group.
Group Co., Ltd., Hunan Valin Xiangtan Iron & Steel Co., Ltd., Benxi Beiying Iron & Steel (Group) Co., Ltd., Jiangsu Binxin Iron & Steel Group Co., Ltd.
Limited Liability Company, Sichuan Steel Structure Intelligent Manufacturing Co., Ltd., Lianyungang Yaxin Steel Co., Ltd., Tianjin Yongchang Welding Wire Co., Ltd., Shandong Suolide
Welding Materials Co., Ltd., Xinji Aosente Steel Group Co., Ltd., and Metallurgical Industry Information and Standardization Research Institute.
The main drafters of this document are. Huang Zhen, Liu Cheng, Chen Tao, Ren Cuiying, Zhang Lei, Sui Zhisong, Tang Qingjun, Wu Huazhang, Lin Tao, Weng Xuesong, and Sun Shanbo.
Zhang Jian, Guan Changyong, Cui Juan, Qi Fengyou, Wang Na, Guo Feng, Gong Cui, Pan Xiquan, Du Liming, He Jiduo, Zhang Lin, Feng Chonghai, Xiao Huiying, Qu Chuansong
Wang Lijuan, Chen Yansong, Su Diyao, Sun Lixiong, Liu Hongjun, Liu Shuyu, Wang Lingjun.
The document replaced by this document has been released in the following versions.
---GB/T 3429, first published in 1982, first revised in.1994, second revised in.2002, and third revised in.2015;
---GB/T 33958, first published in.2017;
---GB/T 33964, first published in.2017.
Welding steel wire rod
1.Scope
This document specifies the designation method, ordering details, manufacturing process, technical requirements, test methods, and inspection rules for welding steel wire rods.
Packaging, labeling, and quality certificates.
This document applies to the manufacture of welding materials for applications such as shielded metal arc welding, submerged arc welding, electroslag welding, gas shielded welding, laser hybrid welding, and additive manufacturing.
Steel wire rod for use (hereinafter referred to as "wire rod").
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 223 (all parts) Chemical Analysis Methods for Iron and Steel and Alloys
GB/T 228.1 Metallic materials – Tensile testing – Part 1.Test method at room temperature
GB/T 2101 General Provisions for Acceptance, Packaging, Marking and Quality Certificate of Steel Sections
GB/T 2975 Sampling Location and Specimen Preparation for Mechanical Property Testing of Steel and Steel Products
GB/T 4336 Determination of Multi-Element Content in Carbon Steel and Medium-Low Alloy Steels by Spark Discharge Atomic Emission Spectrometry (Conventional Method)
GB/T 10561 Determination of Non-metallic Inclusion Content in Steel - Standard Rating Chart Microscopic Examination Method
GB/T 13298 Examination Methods for Metallic Microstructure
GB/T 14981-2009 Dimensions, shape, weight and permissible deviations of hot-rolled round bars
GB/T 20066 Sampling and Sample Preparation Methods for the Determination of Chemical Composition of Steel and Iron
GB/T 20123 Determination of Total Carbon and Sulfur Content in Iron and Steel - Infrared Absorption Method After Combustion in a High-Frequency Induction Furnace (Conventional Method)
GB/T 20125 Determination of Multi-Element Content in Low-Alloy Steels by Inductively Coupled Plasma Atomic Emission Spectrometry
GB/T 20126 Determination of low carbon content in non-alloy steels – Part 2.Infrared absorption method after combustion in an induction furnace (preheated)
GB/T 22368 Determination of Multi-Element Content in Low-Alloy Steels by Glow Discharge Atomic Emission Spectrometry (Conventional Method)
YB/T 081 Metallurgical Technical Standards. Numerical Rounding and Judgment of Test Values
3.Terms and Definitions
This document does not contain any terms or definitions that need to be defined.
4.Brand designation method
The grade of steel wire rod for welding consists of four parts.
a) Part 1.The first letter of the pinyin for "welding steel" is H (capitalized);
b) Part Two. Carbon Content (mass fraction);
c) Part Three. Major Alloying Elements, listed in the following order. Mn, Si, Cr, Ni, Mo, Cu, V, Ti, B, Zr, Al, excluding those not listed.
The elements are arranged in order of their abundance, following the position of Al.
d) Part Four. Steel Metallurgical Quality. In this section, high-grade premium steel and extra-premium premium steel are represented by A and E respectively.
High-quality steel is not represented by letters.
Example 1.H08MnSiNiCu.
H --- "Welding steel";
08 --- Carbon content (mass fraction);
MnSiNiCu --- Main alloying elements.
Example 2.H08MnSiCrNiCuA.
H --- "Welding steel";
08 --- Carbon content (mass fraction);
MnSiCrNiCu --- Main alloying elements;
A --- High-grade quality steel.
5.Order details
Contracts for orders placed in accordance with this document should include at least the following.
a) Product Name;
b) This document number;
c) Brand;
d) Specifications;
e) Delivery status;
f) Delivery weight (or quantity);
g) Special requirements.
6.Manufacturing process
6.1 Smelting Method
Steel for wire rod is usually smelted in an oxygen converter or electric furnace.
6.2 Delivery Status
The wire rod is delivered in hot-rolled condition, but may also be delivered in annealed, isothermal heat-treated, or other conditions upon agreement between the supplier and the buyer.
7 Technical Requirements
7.1 Grade and Chemical Composition
7.1.1 The grade and chemical composition (finished product analysis) of wire rod shall conform to the provisions of Table 1.
7.1.2 The supplier shall guarantee that the chemical composition (finished product analysis) of the wire rod conforms to the specifications in Table 1, subject to agreement between the supplier and the buyer and specified in the contract.
Delivery is based on chemical composition (smelting analysis).
7.1.3 Other grades and chemical compositions of wire rods may be supplied upon agreement between the supplier and the buyer, and as specified in the contract.
7.2 Surface Quality
7.2.1 The head and tail of the wire rod should be cut off, and its cross-section should be free of shrinkage cavities, delamination and inclusions.
7.2.2 The surface of the wire rod should be smooth and free from defects that are harmful to its use, such as cracks, folds, burrs, and scars. Localized indentations, bumps, pits, etc., are also acceptable.
Scratches and pitting should not exceed 0.10 mm in depth or height (measured from the actual dimensions).
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GB/T 3429-2025: Wire rods for welding
Status: Valid
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