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  • ASTM
    A640-97(2019) Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable
    Edition: 2019
    $76.13
    Unlimited Users per year

Description of ASTM-A640 2019

ASTM A640-97-Reapproved2019

Active Standard: Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable




ASTM A640

Scope

1.1 This specification covers two sizes of extra-high-strength grade of concentric-lay steel wire strand, composed of seven, zinc-coated steel wires, specifically intended for use as the supporting messenger in Figure 8-type communication and electrical cables.

1.2 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.

1.3 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.


Keywords

Figure 8 cable support strand; messenger strand; steel wire strand; steel wire-zinc coated;


ICS Code

ICS Number Code 77.140.65 (Steel wire, wir ropes and link chains)


DOI: 10.1520/A0640-97R19

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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