GB/T 12612-2005General specification for multifunctional solution of iron and steel surface treatment (English PDF)
多功能钢铁表面处理液通用技术条件
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China
Level / Type
National · Recommended
Issue date
June 23, 2005
Implementation date
December 1, 2005
Scope
GB/T 12612-2005 is the English-translated version of 多功能钢铁表面处理液通用技术条件.
GB/T 12612-2005 is the Chinese national standard on general specification for multifunctional solution of iron and steel surface treatment, in the field of manufacturing engineering.
The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up — which in practice is how most foreign buyers meet it.
It was issued on 23 June 2005 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 December 2005.
Classification: ICS 25.220.20, CCS A29. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there.
The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.
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Document preview — GB/T 12612-2005
National Standard of the People's Republic of China
- ICS
- 25.220.20
- Classification
- A29
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Classification
- 5 Technical requirements
- 6 Inspection methods
- 7 Inspection rules
- 8 Marking, packaging, transport and storage
- Annex A (normative) Method for the determination of total acidity and free acidity
- Annex B (normative) Method for the determination of the mass per unit area of phosphate coatings
- Annex C (informative) Assessment of the rust condition of steel surfaces
3 Terms and definitions
4 Classification
5 Technical requirements
6 Inspection methods
7 Inspection rules
8 Marking, packaging, transport and storage
Foreword
This document was issued on 23 June 2005 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of China, and has been in force since 1 December 2005.
It replaces GB/T 12612-1990.
Classification: ICS 25.220.20, CCS A29.
About this edition
GB/T 12612-2005 is the current edition. It was issued on 23 June 2005 and has been in force since 1 December 2005, replacing GB/T 12612-1990.
GB/T 12612-1990 has been superseded: a specification that still cites it is citing a withdrawn edition.
The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one from the record of the Standardization Administration.
Classification and status
GB/T 12612-2005 is classified under ICS 25.220.20, in the field of manufacturing engineering. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.
Its Chinese Standard Classification code is CCS A29. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.
The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 8 pages — is available in the English PDF.
Similar standards
Editions of GB/T 12612
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 12612-2005 | General specification for multifunctional solution of iron and steel surface treatment | current edition | Current |
| GB/T 12612-1990 | General specification for multifunctional solution of steel and iron surface treatment | previous edition | Superseded |
This page sells the current edition, GB/T 12612-2005. Earlier editions are listed for reference only.
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