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GB/T 34503-2017: Tungsten tubes
Status: Valid
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| GB/T 34503-2017 | English | 199 |
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Tungsten tubes
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GB/T 34503-2017
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Basic data | Standard ID | GB/T 34503-2017 (GB/T34503-2017) | | Description (Translated English) | Tungsten tubes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H63 | | Classification of International Standard | 77.150.99 | | Word Count Estimation | 10,144 | | Date of Issue | 2017-09-29 | | Date of Implementation | 2018-04-01 | | 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 | GB/T 34503-2017: Tungsten tubes---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.
Tungsten tubes
ICS 77.150.99
H63
National Standards of People's Republic of China
Tungsten tube
2017-09-29 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by China Nonferrous Metals Industry Association.
This standard by the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized.
This standard was drafted unit. Aetna Technology Co., Ltd., Beijing University of Technology, North Mine New Materials Technology Co., Ltd., Xi'an Fangke new materials
Technology Co., Ltd.
The main drafters of this standard. Liu Guohui, Wang Tiejun, Chen Jin, Li Qiang, Liu Guirong, Chen Feixiong, Nie 祚 Ren, Yang Jian, Zhang Deming, Du Railway.
Tungsten tube
1 Scope
This standard specifies the tungsten tube requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and contract (or order
Single) content.
This standard applies to the tungsten powder produced by powder metallurgy. Products can be applied to fused quartz glass furnace, sapphire crystal furnace, high temperature sintering furnace
The heating body, melt and thermal field components.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 3850 dense sintered metal materials and determination of density of cemented carbide
GB/T 4324 (all parts) tungsten chemical analysis methods
3 requirements
3.1 grade and delivery status
3.1.1 The product code is FWG-1.
3.1.2 Product delivery status is divided into "sintering" and "sintering machined" two kinds of delivery status.
3.2 chemical composition
W content calculated by impurity reduction method, and should not be less than 99.95%. Impurity content should be consistent with the provisions of Table 1.
Table 1 %
element
Content (mass fraction)
no greater than
element
Content (mass fraction)
no greater than
element
Content (mass fraction)
no greater than
element
Content (mass fraction)
no greater than
Al 0.002 Mg 0.003 Pb 0.001 O 0.007
Fe 0.006 Ni 0.005 Bi 0.001 - -
Ca 0.005 Si 0.002 C 0.01 - -
3.3 product shape
The shape of the product shown in Figure 1.
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