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GB/T 7988: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 7988-2013 | English | 519 |
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Vitreous and porcelain enamels -- Determination of resistance to alkaline liquids
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| GB/T 7988-2002 | English | 399 |
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Vitreous and porcelain enamels -- Determination of resistance to hot sodium hydroxide
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| GB/T 7988-1987 | English | 199 |
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Determination of resistance to hot sodium hydroxide of vitreous enamel
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Basic data
| Standard ID | GB/T 7988-2013 (GB/T7988-2013) |
| Description (Translated English) | Vitreous and porcelain enamels -- Determination of resistance to alkaline liquids |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | G94 |
| Classification of International Standard | 71.120; 25.220.50 |
| Word Count Estimation | 12,151 |
| Older Standard (superseded by this standard) | GB/T 7988-2002 |
| Quoted Standard | GB/T 629; GB/T 678; GB/T 6031; GB/T 6682; GB/T 12806; GB/T 20878; HG/T 3105 |
| 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 alkali-resistant glass-lined flat specimen was measured corrosion. This standard applies to the determination of the alkali resistance of vitreous enamel solution corrosion. |
GB/T 7988-2013: Vitreous and porcelain enamels -- Determination of resistance to alkaline liquids
---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 alkaline liquids
ICS 71.120; 25.220.50
G94
National Standards of People's Republic of China
Replacing GB/T 7988-2002
Enamels
Determination of alkali resistance solution Corrosion
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 7988-2002 "Determination enamels Corrosion resistant sodium hydroxide solution." And GB/T 7988-
Compared to 2002, the main technical changes are as follows.
--- Increased determination enamels resistant to other alkaline solution corrosion;
--- Material for holding the test solution cylindrical vessel modify S31668;
--- Increasing the specimen calculation basis of the total weight loss and corrosion rate.
The reference to the standard ISO 28706-4.2008 "Determination of resistance to chemical attack enamel lining of Part 4 of the cylindrical container Alkali
Erosion Measurement "solution.
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 7988-1987, GB/T 7988-2002.
Enamels
Determination of alkali resistance solution Corrosion
1 Scope
This standard specifies the test apparatus and method for glass-lined plate specimen Alkali corrosion measurement solution.
This standard applies to the determination of alkali-resistant enamels solution 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 629 chemical reagent sodium hydroxide
GB/T 678 chemical reagent alcohol (ethanol)
GB/T 6031 Determination of vulcanized rubber or thermoplastic rubber hardness (10 ~ 100IRHD)
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 12806 Laboratory glassware single marking flask
GB/T 20878 stainless steel and heat-resistant steel grades and chemical composition
Preparation of HG/T 3105 glass-lined steel specimens
Principle 3
The glass-lined surface immersed in a certain concentration, the alkaline solution after a certain time of a certain temperature, measuring the mass loss of the samples, and the calculation unit
Corrosion mass loss rate and bit of area.
4 Reagents
4.1 Overview
Unless otherwise specified, the test procedure is only allowed to use proven analytical grade reagents.
4.2 Distilled water
Test shall comply with distilled water three purity GB/T 6682 provisions of distilled water.
4.3 acetic acid solution
Test equipment for cleaning and sample concentration of 50mL/L.
4.4 neutral detergent
Used to clean grease and dirt surface of the specimen.
...
