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GB/T 2608-2025: Silica refractory bricks
Status: Valid GB/T 2608: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 2608-2025 | English | 279 |
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Silica refractory bricks
| Valid |
GB/T 2608-2025
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| GB/T 2608-2012 | English | 150 |
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Silica refractory bricks
| Valid |
GB/T 2608-2012
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| GB/T 2608-2001 | English | 239 |
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Silica refractory bricks
| Obsolete |
GB/T 2608-2001
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| GB/T 2608-1987 | English | 199 |
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Silica refractory bricks
| Obsolete |
GB/T 2608-1987
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Standard similar to GB/T 2608-2025 GB/T 51033 GB/T 50082 GB/T 2608 Basic data | Standard ID | GB/T 2608-2025 (GB/T2608-2025) | | Description (Translated English) | Silica refractory bricks | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q41 | | Classification of International Standard | 81.080 | | Word Count Estimation | 14,177 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2026-02-01 | | Older Standard (superseded by this standard) | GB/T 2608-2012 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 2608-2025: Silica refractory bricks---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT2608-2025
ICS 81.080
CCSQ41
National Standard of the People's Republic of China
Replaces GB/T 2608-2012
silica bricks
Released on August 1, 2025
Implementation on February 1, 2026
State Administration for Market Regulation
The National Standardization Administration issued
Preface
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 2608-2012 "Silica Bricks". Compared with GB/T 2608-2012, in addition to structural adjustments and editorial changes, the main
The main technical changes are as follows.
a) The scope has been changed (see Chapter 1, Chapter 1 of the.2012 edition);
b) The definition of melt index has been changed (see 3.1, 3.1 of the.2012 edition);
c) Added the JG-95H grade of silica bricks for coke ovens and its physical and chemical indicators (see 4.1 and Table 3);
d) The shape and size requirements of silica bricks have been changed (see 4.2, 4.2 of the.2012 edition);
e) The technical requirements for general silica bricks (see 5.1 of the.2012 edition) have been deleted;
f) Modified some physical and chemical indicators of silica bricks for glass kilns (see Table 1, Table 3 of the.2012 edition);
g) Modified some physical and chemical indicators of silica bricks for coke ovens (see Table 3, Table 5 of the.2012 edition);
h) Modified some physical and chemical indicators of silica bricks for hot blast furnaces (see Table 5, Table 7 of the.2012 edition);
i) The sampling and qualification determination rules have been changed (see 7.2, 7.2 of the.2012 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 is proposed and coordinated by the National Technical Committee for Standardization of Refractory Materials (SAC/TC193).
This document was drafted by. Sinosteel Luoyang Refractories Technology Co., Ltd., Shanxi Yuxian Xixiaoping Refractory Co., Ltd., Henan Chunsheng Group
Co., Ltd., Shandong Refractory Group Lunai Kiln Industry Co., Ltd., Zhengzhou Anake Industrial Co., Ltd., Shandong Luqiao New Materials Co., Ltd.
Company, Shandong Wanqiao Group Co., Ltd., Lengshuijiang Xinda Refractory Materials Manufacturing Co., Ltd., and Shandong Shengquan New Materials Co., Ltd.
The main drafters of this document are. Yang Peipei, Chen Yan, Shi Gaijun, Wu Huijing, Feng Xiaolei, Shi Chenglong, Li Fuchao, Zhang Dunxin, Gao Jianli,
Wang Jinbiao, Xu Dayan, Qin Yinjun, Qin Jiantao, Jing Haoyuan, Han Bajin, Li Huaisheng, Zhang Shaofeng, Li Peixiao, Wang Zhelai, Yin Kunbao, Zhang Daoyun,
Zhang Dunming, Zhang Zhe, Song Weiying, Fan Yajuan, Zhang Xinnian, Tang Sixin, Tang Yuezu, and Zhang Xiumei.
This document was first issued in 1987, revised for the first time in.2001, revised for the second time in.2012, and this is the third revision.
silica bricks
1 Scope
This document specifies the classification, grade, shape and size, technical requirements, test methods, inspection rules, packaging, marking, transportation, storage and
Certificate of quality.
This document is applicable to silica bricks used in glass kilns, coke ovens and hot blast furnaces, and is used as a reference for silica bricks used in other kilns.
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 2992.1 Refractory bricks - Shapes and dimensions - Part 1.General purpose bricks
GB/T 2997 Test method for bulk density, apparent porosity and true porosity of dense shaped refractory products
GB/T 5071 Test method for true density of refractory materials
GB/T 5072 Test method for compressive strength of refractory materials at room temperature
GB/T 5073 Test method for compressive creep of refractory materials
GB/T 5988 Test method for permanent linear changes of refractory materials during heating
GB/T 5990 Test method for thermal conductivity, specific heat capacity and thermal diffusivity of refractory materials (hot wire method)
GB/T 6901 Chemical analysis methods for siliceous refractories
GB/T 7320 Test method for thermal expansion of refractory materials
GB/T 7321 Preparation method of test specimens for shaped refractory products
GB/T 10325 Rules for acceptance sampling and inspection of shaped refractory products
GB/T 10326 Inspection methods for dimensions, appearance and cross-section of shaped refractory products
GB/T 16546 General provisions for packaging, marking, transportation, storage and quality certification of shaped refractory materials
GB/T 18930 Terminology of Refractory Materials
GB/T 20511 Rules for classification of refractory products
GB/T 21114 X-ray fluorescence spectrochemical analysis of refractory materials - Cast glass disc method
YB/T 172 Quantitative phase analysis of silica bricks by X-ray diffraction method
YB/T 370 Test method for refractories' softening temperature under load (non-differential-heating method)
3 Terms and Definitions
The terms and definitions defined in GB/T 18930 and the following apply to this document.
3.1
melt index meltindex
The mass fraction of aluminum oxide w(Al2O3) and twice the sum of the mass fractions of potassium oxide w(K2O) and sodium oxide w(Na2O), that is,
w(Al2O3) 2[w(K2O) w(Na2O)].
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