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GB/T 15960-1995 短波(HF)广播单边带制式技术规范 废止 发布日期 :  1995-12-22 实施日期 :  1996-08-01

定价: 19元 / 折扣价: 17 加购物车

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1.1 This specification covers commercial zinc, zinc-aluminum castings and continuous cast bar stock, as designated and specified in Table 1. 1.2 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价: 590元 / 折扣价: 502 加购物车

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This specification covers the chemical requirements for commercial high fluidity zinc-aluminum alloys in ingot form for remelting for the manufacture of thin wall pressure die castings. A table designates and specifies the requirements for aluminum, magnesium, copper, iron, lead, cadmium, tin, and zinc. The ingots shall conform to the requirements as to chemical composition as prescribed in this table. The specification also covers methods for the determination of chemical composition; dimensions, mass, and permissible variation; and shapes and sizes.1.1 This specification covers a commercial zinc-aluminum alloy in ingot form for remelting for the manufacture of thin wall pressure die castings as designated and specified in Table 1.1.2 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价: 515元 / 折扣价: 438 加购物车

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YD/T 3613-2019 HF固定无线电监测测向系统开场测试参数和测试方法 现行 发布日期 :  2019-12-24 实施日期 :  2020-04-01

本标准适用于HF频段内的固定无线电监测测向系统

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YD/T 3282-2017 HF移动无线电监测测向系统开场测试参数和测试方法 现行 发布日期 :  2017-11-07 实施日期 :  2018-01-01

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YD/T 3281-2017 HF无线电监测接收机技术要求及测试方法 现行 发布日期 :  2017-11-07 实施日期 :  2018-01-01

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T/SCDA 126-2023 HF气相二氧化硅保温材料外墙内保温系统应用技术标准 现行 发布日期 :  2023-06-19 实施日期 :  2023-06-20

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T/SDBMIA 004-2022 HF型装配式高精度模块墙体构造 现行 发布日期 :  2022-06-29 实施日期 :  2022-07-01

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T/SDBMIA 003-2022 HF型装配式高精度模块墙体工程应用技术规程 现行 发布日期 :  2022-06-29 实施日期 :  2022-07-01

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T/SCDA 035-2022 申音爵(HF)材料保温隔声吸音应用技术标准 现行 发布日期 :  2022-06-24 实施日期 :  2022-06-27

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T/SCDA 035-2021 申音爵(HF)材料保温隔声吸音应用技术标准 现行 发布日期 :  2021-06-28 实施日期 :  2021-06-29

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T/SCDA 006-2018 HF硅微粉改性聚苯颗粒不燃保温板外墙保温系统建筑构造 现行 发布日期 :  2018-08-06 实施日期 :  2018-08-07

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