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GB 15763.2-2005 English PDF (GB15763.2-2005)

GB 15763.2-2005 English PDF (GB15763.2-2005)

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GB 15763.2-2005: Safety glazing materials in building -- Part 2: Tempered glass

This part of GB 15763 specifies the classification, technical requirements, test methods and inspection rules of the tempered glass which is used in building and is fabricated by heat treatment process. This part of GB 15763 is applicable to the tempered glass which is used in building and is fabricated by heat treatment process. As for tempered glasses for other purposes other than building (such as industrial equipment, furniture, etc.), if there is no corresponding product standard, this standard may be adopted by reference according to their product features.
GB 15763.2-2005
ICS 81.040
Q 33
GB
NATIONAL STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
Replacing GB 9963-l998
Replacing GB 17841-l999 (Partial)
Safety Glazing Materials in Building ?€?
Part 2. Tempered Glass
ISSUED ON. AUGUST 30, 2005
IMPLEMENTED ON. MARCH 1, 2006
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine (AQSIQ);
Standardization Administration (SAC) of the People's
Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Definition and Classification ... 5
4 Glass Used for Tempered Glass ... 6
5 Requirements ... 6
6 Test Method ... 11
7 Inspection Rules ... 15
8 Marking, Packaging, Transportation and Storage ... 16
Appendix A (Informative) Relevant Explanation for Tempered Glass ... 18 Foreword
Articles 5.5, 5.6 and 5.7 in this part are compulsory and the rest are voluntary. At present, "Safety Glazing Materials in Building" (GB 15763) is divided into two parts. - Part 1. fire-resistant glass;
- Part 2. tempered glass.
This part is Part 2 of GB 15763.
This part replaces "Tempered Glass" (GB/T 9963-1998) and the relevant requirements for tempered glass used in curtain wall in "Tempered and Heat-strengthened Glass Used in Curtain Walls" (GB 17841-1999).
Compared with GB/T 9963-1998, the main changes in this part are as follows. - the methods and requirements for fragmentation test were modified;
- the requirements for normative references were revised as. the dated and undated normative references were differentiated (Chapter 2 in GB/T 9963-1998, Chapter 2 in this part);
- the classification of vertical method tempered glass and horizontal method tempered glass was added (Chapter 3 in this part);
- the requirements for surface stress and thermal shock resistance performance of tempered glass used in curtain wall specified in GB 17841-1999 were adopted; the requirements for surface stress were modified (Articles 5.4.1, 5.4.3, Sections 6.4 and 6.6 in GB 17841-1999; Sections 5.8, 5.11, 6.8 and 6.9 in this part);
- the requirements for the dimension of the glass round hole were added (Article 5.1.5 in this part);
- the requirements for appearance quality were modified;
- the methods and requirements of transmittance and wind load resistance performance were deleted or reduced;
- the sampling rule was modified;
- the explanation for stress spot and spontaneous explosion of tempered glass was added (Appendix A in this part).
Appendix A of this part is informative.
This part was proposed by China Building Material Industry Association. This part is under the jurisdiction of National Technical Committee on Glass in Building of Standardization Administration of China.
Drafting organizations of this part. Scientific Institute for Glass of China Academy of Building Material Research, Qinhuangdao Glass Industry Design & Research Institute, and Technical Supervision and Research Center for Building Materials Industry. Participating drafting organizations of this part. Shenzhen Nanbo Building Glass Com. Ltd., Guangdong Golden Glass Technologies Limited, Ningbo Jianghua Xinyi Safety Glass Com. Ltd., and Wuxi Xinhui Glass Product Factory.
Chief drafting staffs of this part. Yang Jianjun, Qiu Guohong, Han Song, Mo Jiao, Gong Shuyi, Wang Rui, Liu Zhifu, Li Jinping, Zhu Mei, Ai Fazhi, Wu Dehua, Zhuang Dajian, and Xia Weiwen.
The previous standards replaced by this part are as follows.
GB 9963-1988, GB/T 9963-1998, and the relevant portions for tempered glass used in curtain wall in GB 17841-1999.
Safety Glazing Materials in Building ?€?
Part 2. Tempered Glass
1 Scope
This part of GB 15763 specifies the classification, technical requirements, test methods and inspection rules of the tempered glass which is used in building and is fabricated by heat treatment process.
This part of GB 15763 is applicable to the tempered glass which is used in building and is fabricated by heat treatment process. As for tempered glasses for other purposes other than building (such as industrial equipment, furniture, etc.), if there is no corresponding product standard, this standard may be adopted by reference according to their product features. 2 Normative References
The following standards contain provisions which, through reference in this part, constitute provisions of this part. For dated reference, subsequent amendments (excluding corrections), or revisions of any of these publications do not apply. However, the parties who enter into agreement based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB 9962-1999 Laminated Glass
GB 11614 Float Glass
GB/T 18144 Test Method for Measurement of Stress in Glass
3 Definition and Classification
3.1 Definition
Tempered glass. it refers to the glass undergone heat treatment process. It is characterized by a compressive stress layer formed on its surface. Its mechanical strength and thermal shock resistance strength are improved. And it has special characteristics of fragmentation. 3.2 Classification
3.2.1 Tempered glass may be classified into the following types by production process. Tempered glass fabricated with vertical method. the tempered glass fabricated by method of clamping and hanging, during the tempering process.
Tempered glass fabricated with horizontal method. the tempered glass fabricated by method of horizontal roller support, during the tempering process.
Take 4 flat pattern glass specimens for test. 1 of the following items 1) or 2)) shall be met. 1) When the glass is broken, the total mass of the top-10 big fragments of each specimen shall not exceed the mass of specimen in 65cm2 area. And the length of any glass fragment which has no through-crack and is retained in frame shall not exceed 120mm.
2) When the drop height of the bag is 1200mm, the specimen shall not be broken. 5.8 Surface stress
The surface stress of tempered glass shall not be less than 90MPa.
Take 3 specimens for test. It is deemed as qualified if all specimens meet the requirements. It is deemed as unqualified if there are 2 specimens failing to meet the requirements. If 2 specimens meet the requirements, take another 3 specimens for test. and it is deemed as qualified if all specimens meet the requirements.
5.9 Thermal shock resistance performance
Tempered glass shall be capable of withstanding a temperature difference of 200??C without damage.
Take 4 specimens for test. The performance is deemed as qualified if all the 4 specimens meet the requirements. It is deemed as unqualified if there are more than 2 specimens failing to meet the requirements. If 1 specimen fails to meet the requirements, take additional 1 specimen for test. And the performance is deemed as qualified if the specimen meets the requirements. If 2 specimens fail to meet the requirements, take another 4 specimens for test, and the performance is deemed as qualified if all the 4 specimens meet the requirements. 6 Test Method
6.1 Dimension inspection
Dimensions shall be measured with the straight steel ruler or steel tape (the minimum scale is 1mm).
6.2 Thickness inspection
Use outside micrometer or the tool with equivalent accuracy, measurement at midpoints of the 4 sides at 15mm away from the glass sides. Arithmetic average of measuring results is the thickness value which shall be rounded to 2 digits after the decimal point (in mm). 6.3 Appearance inspection
The inspection shall be conducted on specimen taken from finished products according to the method specified in GB 11614.
6.4 Measurement curvature degree
The specimen shall be placed at room temperature for more than 4h. During measurement, the specimen shall be vertical, and 2 cushion blocks shall be padded at lower 1/4 the side length. A straight rule or metal wire shall be used to close fit either sides or diagonal lines of the product, and the spacing between straight side and glass shall be measured with a feeler gauge. The degree of curvature (arch-shaped) shall be expressed by the percentage of ratio of arch height to chord length. In partial waveform measurement, a straight rule or metal wire shall be used for measurement at 25mm away from and in parallel to the glass side (the measuring length is 300mm). The height wave hollow or wave crest shall be measured by feeler gauge which shall be divided by 300mm, and the percentage of the calculated value is the curvature degree (wave-shaped), as shown in Figure 6.
6.5 Impact resistance test
6.5.1 Test specimen shall be the plane tempered glass - same thickness, same type, fabricated with the same process conditions of finished products, and dimension of 610mm (-0mm, +5mm)??610mm (-0mm, +5mm).
6.5.2 Test equipment shall comply with the requirements spec...

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