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GB/T 7989-2013: Vitreous and porcelain enamels -- Determination of resistance to chemical corrosion by boiling acids and their vapours
Status: Valid GB/T 7989: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7989-2013 | English | 399 |
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Vitreous and porcelain enamels -- Determination of resistance to chemical corrosion by boiling acids and their vapours
| Valid |
GB/T 7989-2013
|
| GB/T 7989-2003 | English | 279 |
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Vitreous and porcelain enamels -- Determination of resistance to condensing hydrochloric acid vapour
| Obsolete |
GB/T 7989-2003
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| GB/T 7989-1987 | English | 279 |
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Determination of resistance to boiling hydrochloric acid of vitreous enamel
| Obsolete |
GB/T 7989-1987
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PDF similar to GB/T 7989-2013
Basic data | Standard ID | GB/T 7989-2013 (GB/T7989-2013) | | Description (Translated English) | Vitreous and porcelain enamels -- Determination of resistance to chemical corrosion by boiling acids and their vapours | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G94 | | Classification of International Standard | 71.120; 25.220.50 | | Word Count Estimation | 17,167 | | Older Standard (superseded by this standard) | GB/T 7989-2003 | | Quoted Standard | GB/T 622; GB/T 625; GB/T 678; GB/T 6031; GB/T 6579; GB/T 6682; GB/T 8269; GB/T 12804; GB/T 12806; GB/T 21784.2; GB/T 28212; HG/T 3105; ISO 649-1; ISO 3585 | | Regulation (derived from) | National Standards Bulletin 2013 No. 27 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the test device and method for glass-lined flat specimen acid and neutral liquid and vapor corrosion measurement. This standard applies to the determination of vitreous enamel acid and neutral liquid and vapor corrosion. | GB/T 7989-2013: Vitreous and porcelain enamels -- Determination of resistance to chemical corrosion by boiling acids and their vapours
---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.
Viterous and porcelain enamels. Determination of resistance to chemical corrosion by boiling acids and their vapours
ICS 71.120; 25.220.50
G94
National Standards of People's Republic of China
Replacing GB/T 7989-2003
Enamels resistant to boiling acids and corrosive vapors
Performance measurement
Issued on. 2013-12-31
2014-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 7989-2003 "Determination of vitreous enamel resistance to boiling hydrochloric acid vapor corrosion." And GB/T 7989-
Compared to 2003, the main technical changes are as follows.
--- Increased resistance measurement method enamels other solution corrosion;
--- Test device adds the regulator, the input voltage to avoid electric heating coil fluctuations;
--- Increased condensate recovery in the test apparatus, the test solution for controlling the degree of boiling;
--- Increasing the specimen calculation basis of the total weight loss and corrosion rate.
The reference to the standard ISO 28706-2.2008 "Determination of enamel resistance to chemical erosion resistance - Part 2 boiling acids, boiling neutral liquids
Determination "and their vapors chemical attack.
The standard proposed by China Petroleum and Chemical Industry Association.
The standard glass-lined equipment by the National Standardization Technical Committee (SAC/TC72) centralized.
This standard was drafted. Changshu Huamao Chemical Equipment Co., Ltd., Ningbo Mingxin Chemical Machinery Co., Ltd., Jiangyin Silicon Cape enamel
Ltd., the chemical industry of non-metallic materials and equipment for Quality Supervision and Inspection Center.
The main drafters of this standard. Ji Yongxiang, Ye Qing, Li Xuemei, Zhang Nan, Pang Zhen Song, Sang Lin Chun.
This standard replaces the standards previously issued as follows.
--- GB/T 7989-1987, GB/T 7989-2003.
Enamels resistant to boiling acids and corrosive vapors
Performance measurement
1 Scope
This standard specifies the test apparatus and method for glass-lined plate specimen acid and neutral liquids and their vapors corrosion measurement.
This standard applies to the determination of vitreous enamel acid and neutral liquids and their vapors corrosion.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 622 chemical reagent hydrochloric acid
GB/T 625 chemical reagent sulfuric acid
GB/T 678 chemical reagent alcohol (ethanol)
GB/T 6031 Determination of vulcanized rubber or thermoplastic rubber hardness (10 ~ 100IRHD)
GB/T 6579 laboratory glassware thermal shock and thermal shock strength test method
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 8269 citric acid
GB/T 12804 Laboratory glassware cylinder
GB/T 12806 Laboratory glassware single marking flask
GB/T 21784.2 laboratory glassware general purpose density meters - Part 2. Test methods and use
GB/T 28212 Laboratory glassware condenser
Preparation of HG/T 3105 glass-lined steel specimens
ISO 649-1 Laboratory glassware generic densitometer - Part 1. Specification (Laboratoryglassware; Density
hydrometersforgeneralpurposes; Part 1. Specification)
ISO 3585 3.3 borosilicate glass properties (Borosilicateglass3.3-Properties)
Principle 3
Enamel coating is subjected to boiling acidic liquids or gases corrode certain period of time, measuring the mass loss of the glass-lined specimen, and the specimen in the calculation of the time
Mass loss rate per unit area on the room, that the corrosion rate. The lower corrosion rate, enamels boiling acidic liquids or gases corrosion resistance
It can be better.
4 Reagents
4.1 Overview
Unless otherwise specified, the test procedure is allowed only proven analytical grade reagents.
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