“JJG 49-1999”的系列
为您找到相关结果18
  • 废止 HBM 49.3-1986特殊效果镜 晕化镜
    发布日期:
    1986-01-23
    实施日期:
    1986-04-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
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    废止 HBM 49.3-1986 特殊效果镜 晕化镜
    语言:中文
    适用范围:本标准适用于与摄影(摄像)镜头联用的能够产生晕化效果的特殊效果镜。
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  • 废止 CSA C49.1M-1987(R2003)Round Wire, Concentric Lay, Overhead Electrical Conductors
    发布日期:
    2003-01
    语言:
    英文
    来源:
    新信标准
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    废止 CSA C49.1M-1987(R2003) Round Wire, Concentric Lay, Overhead Electrical Conductors
    语言:英文
    适用范围:This Standard covers the electrical and mechanical properties of round wire, concentric lay, overhead electrical conductors made of combinations of any of the following metal wires: (a) 1350-H19 (hard-rawn) aluminum, designated A1; (b) 6101-T81 aluminum alloy, designated A2; (c) 6101-T83 aluminum alloy, designated A4; (d) 5005-Hl9 aluminum alloy, designated A5; and, when applicable, one of the following cores: (e) regular strength steel, designated S1A or S1B, where A and B are zinc coating classes; (f) high strength steel, designated S2A or S2B, (g) extra high strength steel, designated S3A. The conductor designations included in this Standard are: (a) A1, A2, A4, A5; (b) A1/S1A, A1/S1B, A1/S2A, A1/S2B, A1/S3A; (c) A2/S3A; (d) A1/A2, A1/A4, A1/A5. (d) A1/A2, A1/A4, A1/A5
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  • 有效 AWS Z49.1 SPANISH-2012Safety in Welding, Cutting and Allied Processes
    发布日期:
    2012-01
    语言:
    西班牙语
    来源:
    新信标准
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    有效 AWS Z49.1 SPANISH-2012 Safety in Welding, Cutting and Allied Processes
    语言:西班牙语
    适用范围:There is no abstract currently available for this document
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  • 废止 CSA C49.6M-1985(R2000)Zinc-Coated Steel Wires for Use in Overhead Electrical Conductors
    发布日期:
    2000-01
    语言:
    英文
    来源:
    新信标准
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    废止 CSA C49.6M-1985(R2000) Zinc-Coated Steel Wires for Use in Overhead Electrical Conductors
    语言:英文
    适用范围:This Standard covers the mechanical characteristics of round zinc-coated steel wire for use in the manufacture of overhead electrical conductors. This Standard includes the specificatiuris for three strerigth grades of steel wire and two classes of zinc coating.
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  • 有效 AWS Z49.1-2012Safety in Welding, Cutting and Allied Processes
    发布日期:
    2012-01
    语言:
    英文
    来源:
    新信标准
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    有效 AWS Z49.1-2012 Safety in Welding, Cutting and Allied Processes
    语言:英文
    适用范围:Scope and Applicability. This standard shall befor the guidance of educators, operators, managers, and supervisorsin the safe setup and use of welding and cutting equipment, and thesafe performance of welding and cutting operations. Beginning with the revision of 1983, the scope of ANSI StandardZ49.1 has been refocused towards those safe practices forperforming welding, cutting, and allied processes, which aregenerally within the implementation control of the welder or theweld shop management. It is written in a manner suitable forissuance to the welder and shop management to give practicalinformation to help them perform these functions safely. It alsocontains information useful to educators, industrial hygienists,engineers, and similar parties also responsible for safety andhealth in welding. With this refocused scope, some provisions whichappeared in prior editions have been deleted. Those were provisionswhich dealt more in matter of building design and construction,facility pipelines, and electrical installations. Those provisions,of course, are still important and necessary and must be followed.They are not provisions usually under the immediate control ofwelding and cutting operations. Specific provisions are included for oxyfuel gas and arc weldingand cutting, resistance welding, electron beam welding, laser beamcutting and welding, and brazing and soldering. However, therequirements of this standard are generally applicable to the otherwelding processes such as submerged arc welding and alliedprocesses shown in the American Welding Society Master Chart ofWelding and Allied Processes, included in Annex D. Purpose. This standard is for the protection ofpersons from injury and illness and the protection of property(including equipment) from damage by fire and explosions arisingfrom welding, cutting, and allied processes.
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  • 有效 CSA C49.5-2010(R2019)Compact round aluminum stranded conductors (compact round ASC)
    发布日期:
    2019-01
    语言:
    英文
    来源:
    新信标准
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    有效 CSA C49.5-2010(R2019) Compact round aluminum stranded conductors (compact round ASC)
    语言:英文
    适用范围:This Standard covers the electrical and mechanical characteristics of (a) round 1350 aluminum wires used before compacting in the construction of conductors; and (b) bare compact round aluminum stranded conductors (compact round ASC) constructed from the wires specified in Item (a). The following classifications apply to those conductors covered by this Standard: (a) Class AA: for bare conductors used in overhead lines. (b) Class A: (i) for bare conductors where greater flexibility than is afforded by Class AA is required; or (ii) for conductors to be covered with weather-resistant (weather-proof) materials or materials such as thermoplastics, thermosets, pagers, etc. (c) Class B: (i) for the conductors specified in Item (b) where greater flexibility than is afforded by Class A is required; or (ii) for conductors to be covered with materials such as thermoplastics, thermosets, paper, etc. In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
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  • 有效 GJB/Z 49.1-1993军用光缆系列型谱 光缆
    发布日期:
    1993-12-20
    实施日期:
    1994-08-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
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    有效 GJB/Z 49.1-1993 军用光缆系列型谱 光缆
    语言:中文
    适用范围:本指导性技术文件规定了军南光缆的标准系列和品种,以及选择和应用导则。 本指导性技术文件适用于军用设备在设计和制造时应优先选用的光缆栋准系列和品种,同时也作为光缆生产、研制、开发时选择系列和品种的基本依据。 本指导性技术文件不作为交货验收的依据。
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  • 废止 HBM 49.1-1986特殊效果镜 米字镜
    发布日期:
    1986-01-23
    实施日期:
    1986-04-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
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    废止 HBM 49.1-1986 特殊效果镜 米字镜
    语言:中文
    适用范围:本标准适用于与摄影(摄像)镜头联用的米字镜及能够产生各种闪光像的特殊效果镜。 本标准还适用于与摄影(摄像)镜头联用的柔光镜。
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  • 废止 HBM 49.4-1986特殊效果镜 近摄镜
    发布日期:
    1986-01-23
    实施日期:
    1986-04-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
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    废止 HBM 49.4-1986 特殊效果镜 近摄镜
    语言:中文
    适用范围:本标准适用于与摄影(摄像)镜头联用的能够产生近摄效果的各种特效果镜。
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  • 快速预览
    有效 AWS Z49.1 BUNDLE-2012 SAFETY IN WELDING AND CUTTING AND ALLIED PROCESSES INCLUDING STANDARD WELDING TERMS, DEFINITIONS AND SYMBOLS FOR WELDING, BRAZING AND NONDESTRUCTIVE EXAMINATION (INCLUDES
    语言:
    适用范围:There is no abstract currently available for this document
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  • 废止 CSA C49.4-1978(R1999)Concentric - Lay Aluminum Stranded Conductors (ASC)
    发布日期:
    1999-01
    语言:
    英文
    来源:
    新信标准
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    废止 CSA C49.4-1978(R1999) Concentric - Lay Aluminum Stranded Conductors (ASC)
    语言:英文
    适用范围:This Standard covers concentric-lay aluminum alloy 1350 stranded conductors, constructed with a straight round central wire surrounded by one or more layers of helically laid round wires. The conductor temper shall be hard (H19), intermediate, or annealed, as specified. The conductors are for general use for electrical purposes. For the purposes of this Standard conductors are classified as follows: (a) Class AA-for bare conductors usually used in overhead lines; (b) Class A-for conductors to be covered with weather-resistant (weatherproof) materials, and for bare conductors where greater flexibility than is afforded by Class AA is required. Conductors to be insulated and laid helically with, or around, aluminum or ACSR messengers shall be regarded as Class A conductors with respect to direction of lay only (see Clause 3.2.2.4); (c) Class B-for conductors to be insulated with various materials such as thermoplastics, thermosets, paper, etc., and for the conductors indicated under Class A where greater flexibility is required; (d) Classes C and D-for insulated conductors where greater flexibility is required than is provided for Class B conductors.
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  • 快速预览
    有效 CSA C49.3-2010(R2018) Aluminum 1350 wire, annealed and intermediate tempers, for electrical purposes
    语言:英文
    适用范围:This Standard covers the electrical and mechanical characteristics of aluminum 1350 wire, in annealed and intermediate tempers, for stranding into conductors or for use as solid single conductors. In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
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  • 废止 CSA C49.7M-1985(R1999)Aluminum Round Wires for Use in Overhead Electrical Conductors
    发布日期:
    1999-01
    语言:
    英文
    来源:
    新信标准
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    废止 CSA C49.7M-1985(R1999) Aluminum Round Wires for Use in Overhead Electrical Conductors
    语言:英文
    适用范围:This Standard covers the electrical and mechanical characteristics of round wires of aluminum 1350-H19, aluminum alloy 6101-T81, aluminum alloy 6101-T83, and aluminum alloy 5005-H19, having diameters of 1.25 to 6.50 mm, intended for stranding into overhead conductors to be used for electrical purposes.
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  • 有效 CSA C49.2-2010(R2018)Compact round aluminum conductors steel reinforced (ACSR)
    发布日期:
    2018-12
    语言:
    英文
    来源:
    新信标准
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    有效 CSA C49.2-2010(R2018) Compact round aluminum conductors steel reinforced (ACSR)
    语言:英文
    适用范围:This Standard covers the electrical and mechanical characteristics of a) round 1350-H19 hard-drawn aluminum wires (A1) before compacting; b) round zinc-coated hard-drawn steel core wires (S1A); and c) bare compact round concentric-lay-stranded aluminum conductors steel reinforced, constructed from the wires specified in Items (a) and (b) and intended for use in overhead lines. In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
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  • 废止 HBM 49.2-1986特殊效果镜 多影镜
    发布日期:
    1986-01-23
    实施日期:
    1986-04-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
    快速预览
    废止 HBM 49.2-1986 特殊效果镜 多影镜
    语言:中文
    适用范围:本标准适用于与摄影(摄像)镜头联用的三影镜、五影镜、七影镜及能够产生多个影像的特殊效果镜。
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  • AWS Z49.1-2005Safety in Welding, Cutting and Allied Processes
    发布日期:
    2005-01-01
    来源:
    新信标准
    快速预览
    AWS Z49.1-2005 Safety in Welding, Cutting and Allied Processes
    语言:
    适用范围:
    电子版¥340.00
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  • 有效 CSA C49.8-2009(R2018)Bare overhead aluminum conductors for distribution applications
    发布日期:
    2018-01
    语言:
    英文
    来源:
    新信标准
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    有效 CSA C49.8-2009(R2018) Bare overhead aluminum conductors for distribution applications
    语言:英文
    适用范围:This Standard specifies requirements for concentric-lay aluminum stranded conductors, with or without a central core of reinforcing steel strand. These conductors are intended for overhead installation on single-phase or three-phase electrical distribution systems In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only  
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  • 有效 GJB/Z 49.1A-2013军用电子元器件系列型谱 光缆
    发布日期:
    2013-07-10
    实施日期:
    2013-10-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
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    有效 GJB/Z 49.1A-2013 军用电子元器件系列型谱 光缆
    语言:中文
    适用范围:本指导性技术文件规定了军用光缆的标准系列和品种,以及选择和应用导则。 本指导性技术文件适用于军用光缆使用者应优先选用的光缆标准品种系列,同时也作为军用光缆研制生产时选择品种系列的基本依据。本指导性技术文件不作为军用光缆产品交货验收的依据。 本指导性技术文件的目的是: a) 为军用光缆使用者提供适用的军用光缆标准品种系列,以便优化具体应用时所需的光缆品种,达到最大限度地减少非标准品种系列的使用,提高光缆产品的规范化、系列化水平; b) 为军用光缆制造者在研制生产时提供适用的军用光缆标准品种系列,以便优化现行和潜在生产的光缆品种,达到最大限度地减少非标准品种系列的生产,提高光缆产品的规范化、系列化水平; c) 为军用光缆管理者在对光缆产品进行控制和计划管理时提供适用的军用光缆标准品种系列,以较少的品种系列满足广泛使用需要,达到有效的品种控制,增强投资效果,提高产品质量和提供有效的后勤保障。
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