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GB/T 4948-2025 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4948-2025 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.

US$539.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 4948-2025: Sacrificial anode of aluminum alloy
Status: Valid

GB/T 4948: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4948-2025	539	Add to Cart	5 days	Sacrificial anode of aluminum alloy	Valid
GB/T 4948-2002	449	Add to Cart	4 days	Sacrificial anode of Al-Zn-In series alloy	Valid
GB/T 4948-1985	679	Add to Cart	5 days	Sacrificial anode of Al-Zn-In system alloy	Obsolete

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Basic data

Standard ID: GB/T 4948-2025 (GB/T4948-2025)
Description (Translated English): Sacrificial anode of aluminum alloy
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A29
Classification of International Standard: 47.020.05
Word Count Estimation: 26,225
Date of Issue: 2025-04-25
Date of Implementation: 2025-08-01
Older Standard (superseded by this standard): GB/T 4948-2002
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 4948-2025: Sacrificial anode of aluminum alloy

---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.
ICS 47.020.05 CCSA29 National Standard of the People's Republic of China Replace GB/T 4948-2002 Aluminum alloy sacrificial anode Released on 2025-04-25 2025-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols 2 5 Classification, model and specification 2 6 Requirement 15 7 Test methods 17 8 Inspection rules 18 9 Marking, packaging, transportation and storage 20 Appendix A (Normative) Long-term test method for electrochemical performance of sacrificial anode 21

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. This document replaces GB/T 4948-2002 "Aluminum-zinc-indium alloy sacrificial anodes". Compared with GB/T 4948-2002, except for the structural adjustment In addition to the integration and editorial changes, the main technical changes are as follows. a) The applicable scope of aluminum anodes has been changed (see Chapter 1, Chapter 1 of the.2002 edition); b) Added a chapter on "Symbols" (see Chapter 4); c) The classification method of aluminum anodes has been changed (see 5.1, 4.1 of the.2002 edition); d) The model representation method of aluminum anodes has been changed (see 5.2, 4.2 of the.2002 edition); e) Added the structural types and parameters of bolted aluminum anodes for liquid tanks (see Table 7 and Figure 6); f) Added the structure type and parameters of bracelet-type aluminum anode for pipelines (see Table 14 and Figure 12); g) The raw material composition requirements for aluminum anodes have been changed (see 6.1, 5.1 of the.2002 edition); h) The chemical composition and electrochemical performance requirements of the three aluminum anodes have been changed (see 6.2 and 6.3, 5.2 and 5.3 of the.2002 edition); i) Added the surface cold insulation requirements for aluminum anodes (see 6.4.4); j) Changed the surface treatment requirements for aluminum anode iron feet (see 6.5.2, 5.5.2 of the.2002 edition); k) The dimensional deviation requirements for aluminum anodes have been changed (see 6.7.2, 5.7.2 of the.2002 edition); l) Added requirements and test methods for internal defects of aluminum anodes (see 6.8 and 7.7); m) The number of samples and requirements for aluminum anode inspection have been changed (see 8.2.3 and 8.3.4, 7.2.3 and 7.2.4 of the.2002 edition); n) The method for determining the contact resistance between the sacrificial anode body and the iron pin has been deleted (see Appendix A of the.2002 edition). 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 and coordinated by the National Technical Committee for Standardization of Marine Vessels (SAC/TC12). This document was drafted by. Luoyang Ship Materials Research Institute (725th Institute of China Shipbuilding Industry Corporation). The main drafters of this document are. Ma Li, Sun Mingxian, Zhang Haibing, Zhao Yongtao, Li Weili, Xing Shaohua, Zhang Yihan, Wang Hongren, Lin Cunguo, Xu Likun, Zheng Guohua, Liu Zhaohui, Liu Guangyi, Yan Yonggui, and Qu Benwen. This document was first issued in 1985, revised for the first time in.2002, and this is the second revision. Aluminum alloy sacrificial anode

1 Scope

This document specifies the classification, model and specification, requirements, test methods and inspection rules of aluminum alloy sacrificial anode (hereinafter referred to as "aluminum anode"). As well as marking, packaging, transportation and storage. This document is applicable to corrosive media such as seawater, fresh water (resistivity not exceeding 500Ω·cm), sea mud, seabed sand and gravel, and produced water from oil and gas fields Design, production and application of aluminum anodes for cathodic protection in industrial fields such as ships, port and marine engineering facilities, seawater cooling water systems, storage tanks and pipelines The design, production and inspection of aluminum anodes for cathodic protection of other steel structures can be used as a reference.

2 Normative references

The contents of the following documents constitute 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 470-2008 Zinc ingot GB/T 700 Carbon structural steel GB/T 712 Structural steel for ships and marine engineering GB/T 728-2020 Tin Ingot GB/T 1196-2023 Aluminium ingots for remelting GB 1499.1 Steel for reinforced concrete Part 1.Hot rolled plain round bars GB 1499.2 Steel for reinforced concrete Part 2.Hot rolled ribbed steel bars GB/T 3499-2023 Primary magnesium ingot GB/T 4949 Chemical analysis method for sacrificial anodes of aluminum-zinc-indium alloys GB/T 4950-2021 Zinc alloy sacrificial anode GB/T 7999 Photoelectric direct reading emission spectroscopy analysis method for aluminum and aluminum alloys GB/T 8923.1-2011 Surface preparation of steel materials before coating - Visual assessment of surface cleanliness - Part 1.Uncoated The rust level and treatment level of the steel surface after the original coating is completely removed GB/T 17395 Steel pipe dimensions, shape, weight and allowable deviation GB/T 17848 Test method for electrochemical performance of sacrificial anode GB/T 27677-2017 Aluminum Master Alloys YS/T 257-2009 Indium Ingot

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 The actual amount of electricity consumed per unit mass of sacrificial anode is measured. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 4948-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 4948-2025_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 4948-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 4948-2025_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+ countries

Question 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 Sales@ChineseStandard.net. 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 4948-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4948-2025 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.