GB/T 6342-1996 English PDF
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GB/T 6342: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB/T 6342-1996 | 50 | Add to Cart | Auto, 9 seconds. | Cellular plastics and rubbers. Determination of linear dimensions | |
| GB/T 6342-1986 | RFQ | ASK | 3 days | Cellular plastics and rubbers--Determination of linear dimension | Obsolete |
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GB/T 6342-1996: Cellular plastics and rubbers. Determination of linear dimensions
---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/GBT6342-1996GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA GB/T 6342-1996 ISO 1923-1981 Replacing GB 6342-86 Cellular plastics and rubbers - Determination of linear dimensions Approved on: April 10, 1996 Implementation date: December 1, 1996 Issued by: China State Bureau of Technical Supervision
Table of Contents
1 Subject content and applicable scope ... 3 2 Definitions ... 3 3 Instruments and devices ... 3 4 Procedure ... 4 5 Test report ... 6 Annex A Dial gauge (Informative) ... 7 Additional explanation: ... 8 Cellular plastics and rubbers - Determination of linear dimensions This standard is identical to the international standard ISO 1923-1981 Cellular plastics and rubbers - Determination of linear dimensions.1 Subject content and applicable scope
This standard specifies the characteristics and the choice of the measuring equipment and procedure for determination of the linear dimensions of sheets, blocks or test specimens of cellular material (flexible and rigid). This standard is applicable to the determination of linear dimensions of cellular plastics and rubbers.2 Definitions
linear dimension: the shortest distance between two specific points, between two parallel lines or between two parallel planes, defined by corners, edges or surfaces of the cellular specimen3 Instruments and devices
3.1 Dial gauge with a measuring surface of about 10cm2. The gauging pressure shall be 100±10Pa, and the reading accuracy shall be 0.05mm, as shown in Annex A. 3.2 Micrometer: having a measuring surface with a minimum diameter of 5mm, but in any case not less than 5 times the average diameter of the cells, permitting reading with an accuracy of 0.05mm. Use of a micrometer is restricted to rigid cellular materials. 3.3 Sliding caliper: with a vernier permitting reading to an accuracy of 0.1mm. The median of 3 readings at each position shall be taken and the average of the 5 or more median values calculated. 4.3 Measurement with dial gauge The measurement shall normally be made on a base plate. The base plate must be larger than the largest dimension of the specimen that is supported by the base plate. The specimen shall rest flat upon the base plate during the measurements. The readings of the dial gauge shall be rounded off to the nearest 0.1mm. 4.4 Measurement with micrometer For the measurement, the plane surfaces of the micrometer shall be continuously brought together until they just touch the cellular material, without causing any distortion or damage of the surface of the specimen. The specimen shall be moved slightly back and forward. Simultaneously the plane surfaces of the micrometer shall be slowly brought together until a slight resistance to the movement is felt. The area of the measuring surface may be increased by measuring over metal sheet or plate. The readings of the micrometer shall be rounded off to the nearest 0.1mm. 4.5 Measurement with sliding caliper The readings of the sliding caliper shall be rounded off to the nearest 0.2mm. The caliper shall be progressively preset to smaller measurements and presented to the specimen until the setting is reached when the caliper measuring faces just touch the surfaces of the specimen without any compression or damage to the latter. 4.6 Measurement with metal rule or metal tape The cellular material shall not be distorted or damaged by the application of the metal rule or metal tape. The metal rule or metal tape measurements shall be rounded off to the nearest 1mm. Chinese Standards This is an excerpt of the PDF (Some pages are marked off intentionally) Full-copy PDF can be purchased from 1 of 2 websites: 1. https://www.ChineseStandard.us SEARCH the standard ID, such as GB 4943.1-2022. Select your country (currency), for example: USA (USD); Germany (Euro). Full-copy of PDF (text-editable, true-PDF) can be downloaded in 9 seconds. Tax invoice can be downloaded in 9 seconds. Receiving emails in 9 seconds (with download links). SEARCH the standard ID, such as GB 4943.1-2022. Full-copy of PDF (text-editable, true-PDF) can be downloaded in 9 seconds. Receiving emails in 9 seconds (with PDFs attached, invoice and download links). Translated by: Field Test Asia Pte. Ltd. (Incorporated & taxed in Singapore. Tax ID: 201302277C) Linkin: https://www.linkedin.com/in/waynezhengwenrui/ ------ The End ------ ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
