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GB/T 23262-2023: Test methods for nonmetallic sealing packings
Status: Valid GB/T 23262: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23262-2023 | English | 329 |
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Test methods for nonmetallic sealing packings
| Valid |
GB/T 23262-2023
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| GB/T 23262-2009 | English | 479 |
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Test method for nonmetallic sealing packings
| Obsolete |
GB/T 23262-2009
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PDF similar to GB/T 23262-2023
Basic data | Standard ID | GB/T 23262-2023 (GB/T23262-2023) | | Description (Translated English) | Test methods for nonmetallic sealing packings | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q69 | | Classification of International Standard | 23.100.99 | | Word Count Estimation | 16,164 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Older Standard (superseded by this standard) | GB/T 23262-2009 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23262-2023: Test methods for nonmetallic sealing packings---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.
ICS 23:100:99
CCSQ69
National Standards of People's Republic of China
Replace GB/T 23262-2009
Test methods for non-metallic sealing packings
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document replaces GB/T 23262-2009 "Test Methods for Non-metallic Sealing Packings": Compared with GB/T 23262-2009, except for the structure
In addition to adjustments and editorial changes, the main technical changes are as follows:
a) Added "Determination of dimensional deviation" (see Chapter 5);
b) Added "Determination of pH value" (see Chapter 6);
c) Changed "Determination of loss on ignition/temperature resistance loss" (see Chapter 7, Chapter 4 and Chapter 6 of the:2009 edition);
d) Change "(105±5)℃" to "80℃~90℃" (see 10:2:5, 8:2:5 of the:2009 version);
e) Changed "Determination of Acid Loss" (see Chapter 11, Chapter 9 of the:2009 edition);
f) Changed "Determination of alkali loss" (see Chapter 12, Chapter 10 of the:2009 edition);
g) Change "20% (mass fraction) sodium hydroxide and 5% (mass fraction) zinc powder" to "200mL sodium hydroxide (mass fraction)
20%) and 100mL zinc powder (mass fraction 5%)” (see 15:3:4, 13:3:4 of the:2009 edition);
h) Added "Determination of sealing performance" (see Chapter 16):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Building Materials Federation:
This document is under the jurisdiction of the National Technical Committee on Standardization of Non-Metallic Mineral Products and Products (SAC/TC406):
This document was drafted by: Chengdu Junma Sealing Technology Co:, Ltd:, China Chemical Transportation Construction Group Co:, Ltd:, Zhejiang Chengyu Environmental Protection
New Materials Co:, Ltd:, Xianyang Non-metallic Mineral Research and Design Institute Co:, Ltd:, Guangzhou Dongshan Nanfang Seals Co:, Ltd:, Xianyang Hailong
Sealing Composite Materials Co:, Ltd:, Yantai Ishikawa Sealing Technology Co:, Ltd:, Guizhou Panjiang Coal and Electricity Group Technology Research Institute Co:, Ltd:, Ci
Xi High-tech Sealing Materials Co:, Ltd:, Suzhou Sinoma Non-metallic Minerals Industrial Design and Research Institute Co:, Ltd:, Hangzhou Hangcha Machinery Processing Co:, Ltd:
Company, Hangzhou Zhongneng Cloud Technology Co:, Ltd:
The main drafters of this document: Zhang Honglin, Ma Qiongxiu, Lou Xiaogang, Zhou Qiwen, Wu Kaijun, Cao Juncai, Zhu Haifeng, Qiao Xingyao, Gong Xuyuan,
Ding Qinhua, Huang Hai, Cui Shan, Zheng Changwen, Zhang Song, Wang Tao, Wei Kai, Jia Runzhi, Tong Mingyan, Hou Caihong:
This document was first published in:2009 and this is the first revision:
Test methods for non-metallic sealing packings
1 Scope
This document describes the dimensional deviation, pH value, temperature resistance/loss on ignition, bulk density, ash content, impregnating agent content,
Test methods for acid loss, alkali loss, compression rate, rebound rate, friction coefficient, wear amount, corrosion resistance and sealing performance:
This document applies to braided and twisted (twisted) non-metallic sealing packings:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 8170 Numerical rounding rules and expression and determination of limit values
3 Terms and definitions
There are no terms or definitions to be defined in this document:
4 Sample preparation
In the direction perpendicular to the length of the sample, cut a sample of a certain length from the full cross-section as the test sample, and determine the sample according to the requirements of each individual test:
The quantity and length of the products are determined and dried:
5 Determination of dimensional deviation
5:1 Instruments and equipment
Vernier caliper: accuracy is 0:02mm:
5:2 Test procedures
5:2:1 Filling size deviation: Cut out a sample with a length of 3m, and use a vernier caliper to measure from two mutually perpendicular directions (accurate to
0:1mm), take any point of the braided packing as the starting point, measure once every 1m, and use the arithmetic mean of the three measurements as the measurement
result:
5:2:2 Dimensional deviation of the packing ring: When measuring the inner and outer diameters, the arithmetic mean of the measured values at three equal arcs is taken as the measurement result; when measuring the height, the
Measure three points on equal arcs in the circumferential direction, and take the arithmetic mean of the measured values as the measurement result:
6 Determination of pH value
6:1 Instruments and equipment
6:1:1 Acidometer: the accuracy is not less than 0:01:
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