|
US$519.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 28906-2025: Hot-rolled steel wire rod for cold heading
Status: Valid GB/T 28906: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 28906-2025 | English | 519 |
Add to Cart
|
5 days [Need to translate]
|
Hot-rolled steel wire rod for cold heading
| Valid |
GB/T 28906-2025
|
| GB/T 28906-2012 | English | 279 |
Add to Cart
|
3 days [Need to translate]
|
Hot rolled wire rod for cold heading
| Valid |
GB/T 28906-2012
|
PDF similar to GB/T 28906-2025
Basic data | Standard ID | GB/T 28906-2025 (GB/T28906-2025) | | Description (Translated English) | Hot-rolled steel wire rod for cold heading | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H44 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 26,254 | | Date of Issue | 2025-03-28 | | Date of Implementation | 10/1/2025 | | Older Standard (superseded by this standard) | GB/T 28906-2012,GB/T 29087-2012 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 28906-2025: Hot-rolled steel wire rod for cold heading---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
National Standard of the People's Republic of China
ICS 77.140.60CCS H 44
Cold Heading Steel Hot Rolled Wire Rod
Hot⁃rolled steel wire rod for cold heading
2025-03-28 Release
2025-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Replaces GB/T 28906-2012, GB/T 29087-2012
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
This document replaces GB/T 28906-2012 "Hot-rolled cold-forging steel wire rod" and GB/T 29087-2012 "Non-quenched and tempered hot-rolled cold-forging steel wire rod"
In addition to structural and editorial changes, the main technical changes are as follows.
--The sulfur and phosphorus contents have been changed (see Chapter 7, Chapter 6 of GB/T 28906-2012);
--Changed the grades of quenched and tempered cold heading steel hot rolled wire rods, adjusted according to GB/T 6478-2015, and added ML38, ML50,
ML40Mn2, ML45Mn2, ML30CrMnSi, ML15CrMo, ML42CrMo, ML20CrMoV, ML35CrMoV,
Ten grades of ML42CrMoV (see 7.1.3, 6.1.4 of GB/T 28906-2012);
--Added boron-containing quenched and tempered grades, including ML23B, ML28B, ML33B, ML38B, ML45B, ML20CrB,
ML25CrB, ML35VB eight grades (see 7.1.3);
--The scope and composition of non-adjustable steel have been changed (see 7.1.4, 6.1.1 of GB/T 29087-2012);
--Added the residual molybdenum content requirement (see 7.1.5);
--Changed the mechanical property requirements (see 7.2.2.2, 7.2.3.1, 6.4.2 of GB/T 28906-2012, GB/T 29087-2012
of 6.5);
--Added low temperature impact performance requirements (see 7.2.3.2);
--Changed the requirements for macrostructure (see 7.7, 6.8 of GB/T 28906-2012);
--Added recommended quenching temperature and Rockwell hardness values at different distances from the quenching end (see 7.8);
--Changed the surface quality requirements (see 7.9, 6.9 of GB/T 28906-2012);
--Added size requirements (see 7.10.2);
--The coil weight of wire rod has been changed (see 7.10.3, 5.2 of GB/T 28906-2012);
--Added requirements for iron oxide scale (see 7.11);
--The test method has been changed (see 8.1, 8.2, Chapter 7 of GB/T 28906-2012).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Iron and Steel Association.
This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC 183).
This document was drafted by. Jiangsu Yonggang Group Co., Ltd., Jiangsu Shagang Steel Co., Ltd., Qingdao Special Steel Co., Ltd., Fujian
Sangang Minguang Co., Ltd., Maanshan Iron and Steel Co., Ltd., Henan Jiyuan Iron and Steel (Group) Co., Ltd., Hunan Valin Xiangtan Iron and Steel
Co., Ltd., Tianjin Rongcheng United Steel Group Co., Ltd., Jiangsu Binxin Steel Group Co., Ltd., Benxi Beiying Steel (Group) Co., Ltd.
Co., Ltd., Guangdong Zhongnan Iron and Steel Co., Ltd., Ningbo Ningli High Strength Fastener Co., Ltd., Ningbo Jiulong Chuangzhan Fastener Co., Ltd.
Co., Ltd., Fubai New Materials (Zhejiang) Co., Ltd., and Metallurgical Industry Information Standards Research Institute.
The main drafters of this document are. Hu Junhui, Yu Tongren, Leng Mingjian, Ren Cuiying, Wang Kaizhong, Sui Zhisong, Nie Wenjin, Li Xiangchun, Zhou Wenbo,
Dong Wenli, Jia Jin, Pi Pengfei, Lin Tao, Tian Weiyang, Huang Zhuming, Xu Yong, Dai Peihong, Pan Yijie, Qu Xiaobo, Wang Zhenchuan, Liu Zhengpeng, Fang Yurong,
Jiang Ting, Jia Chuan, Yu Gang, Xu Mingjie, Zhang Baomin, Zhang Dong, Lei Zhongyu, Chen Yansong, Li Xiaoya, Su Diyao, Liu Hongjun, Zhang Xiaorui, and Wang Lingjun.
The previous versions of the documents replaced by this document are as follows.
--GB/T 28906-2012, GB/T 29087-2012.
Cold Heading Steel Hot Rolled Wire Rod
1 Scope
This document specifies the classification and grade representation method, ordering content, manufacturing process, technical requirements, test methods,
Inspection rules, packaging, marking and quality certificates.
This document applies to cold heading for manufacturing fasteners such as bolts, screws and studs with a nominal diameter of 5 mm to 52 mm and cold heading steel wire.
Hot rolled steel wire rod (hereinafter referred to as "wire rod"), if it exceeds the scope of this specification, can refer to this document for implementation.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 222 Permissible deviation of chemical composition of finished steel products
GB/T 223.5 Determination of acid-soluble silicon and total silicon content of iron and steel - Reduced molybdenum silico-silicic acid spectrophotometric method
GB/T 223.9 Determination of aluminum content in steel and alloys - Chrome azurol S spectrophotometric method
GB/T 223.11 Determination of chromium content in steel and alloys Visual titration or potentiometric titration method
GB/T 223.12 Methods for chemical analysis of iron, steel and alloys - Sodium carbonate separation - Diphenylcarbazide photometric method for determination of chromium content
GB/T 223.14 Chemical analysis methods for iron, steel and alloys - Tantalum extraction spectrophotometric method for determination of vanadium content
GB/T 223.26 Determination of molybdenum content in steel and alloys - Thiocyanate spectrophotometric method
GB/T 223.37 Determination of nitrogen content in iron, steel and alloys - Spectrophotometric method using indophenol blue distillation separation
GB/T 223.40 Determination of niobium content in iron, steel and alloys - Chlorosulfonphenol S spectrophotometric method
GB/T 223.53 Chemical analysis methods for iron, steel and alloys - Determination of copper content by flame atomic absorption spectrophotometry
GB/T 223.54 Determination of nickel content in steel and alloys - Flame atomic absorption spectrometry
GB/T 223.59 Determination of phosphorus content in iron, steel and alloys - Bismuth phosphomolybdenum blue spectrophotometric method and antimony phosphomolybdenum blue spectrophotometric method
GB/T 223.60 Determination of silicon content in steel and alloys by gravimetric method
GB/T 223.63 Determination of manganese content in steel and alloys - Sodium (potassium) periodate spectrophotometric method
GB/T 223.78 Chemical analysis methods for iron, steel and alloys - Curcumin direct photometric method for determination of boron content
GB/T 223.79 Determination of multi-element content of steel - X-ray fluorescence spectrometry (conventional method)
GB/T 223.81 Determination of total aluminum and total boron content of steel and alloys - Microwave digestion - Inductively coupled plasma mass spectrometry
GB/T 223.84 Determination of titanium content in steel and alloys - Diantipyryl methane spectrophotometric method
GB/T 223.85 Determination of sulfur content in iron, steel and alloys - Infrared absorption method after combustion in an induction furnace
GB/T 223.86 Determination of total carbon content of steel and alloys - Infrared absorption method after combustion in an induction furnace
GB/T 224 Determination of the depth of decarburization layer of steel
GB/T 225 End quenching test method for hardenability of steel (Jominy test)
GB/T 226 Acid etching test method for macrostructure and defects of steel
GB/T 228.1 Tensile test of metallic materials Part 1.Room temperature test method
GB/T 229 Charpy pendulum impact test method for metallic materials
GB/T 230.1 Rockwell hardness test for metallic materials Part 1.Test method
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 28906-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 28906-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 28906-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 28906-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 28906-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 28906-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|