1、Designation:A49111(Reapproved 2017)Standard Specification forAluminum-Coated Steel Chain-Link Fence Fabric1This standard is issued under the fixed designation A491;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revi
2、sion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers aluminum-coated steel chain-link fence fabric,aluminum-coated before weaving.1.2 The values stated in inch
3、-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Internati
4、onal Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA700 Guide for Packaging,Marking,and Loading Methodsfor Steel
5、Products for ShipmentA817 Specification for Metallic-Coated Steel Wire forChain-Link Fence Fabric and Marcelled Tension Wire2.2 Federal Standard:3Fed.Std.No.123 Marking for Shipment,Civil Agencies2.3 Military Standards:3MIL-STD-129 Marking for Shipment and StorageMIL-STD-163 Steel Mill Products,Prep
6、aration for Ship-ment and Storage3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 chain link fence fabrica fencing material made fromsteel wire helically wound and interwoven in such a manner asto provide a continuous mesh without knots or ties except inthe form of knuckling or
7、of twisting the ends of the wires toform the selvage of the fabric.3.1.2 diamond countthe number of diamond openingsfrom one edge of the fabric to the other.The diamond count ofa given fabric shall begin at the first completed diamond at oneedge and continue to the unfinished(12)or full opening at t
8、heother edge.3.1.3 knucklinga term used to describe the type of selvageobtained by interlocking adjacent pairs of wire ends and thenbending the wire ends back into a loop.The loop shall beclosed or nearly closed to a measurement less than the diameterof the wire.3.1.4 twistinga term used to describe
9、 the type of selvageobtained by twisting adjacent pairs of wire ends together in aclose helix of 112machine turns,which is equivalent to 3 fulltwists,and cutting the wire ends at an angle.The wire endsbeyond the twist shall be at least14in.(6.4 mm)long.Thistype of selvage is not used on fabric with
10、a mesh size of lessthan 2 in.(50.8 mm).4.Ordering Information4.1 Orders for chain-link fence fabric purchased to thisspecification shall include the following information:4.1.1 Quantity(Section 14),4.1.2 Size of mesh(Section 7),4.1.3 Size of wire(Section 8),4.1.4 Height of fabric(Section 9),4.1.5 Di
11、amond count,if specified(Section 6),4.1.6 Type of selvage(Section 10),4.1.7 Certification if required(Section 17),and4.1.8 ASTM designation and year of issue.4.2 All rolls of fencing accepted by the purchaser shall bebilled on the basis of the original footage of the rolls beforesampling,unless chan
12、ged by contractual arrangement.NOTE1A typical ordering description is as follows:25 rolls,50 fteach,chain-link fence fabric,aluminum-coated,2 in.mesh.0.148 in.wire,60 in.high,knuckled both selvages,to ASTM A491XX.5.Materials5.1 The wire from which the fabric is woven shall conformto all requirements
13、 of Specification A817 for Type I coating.1This specification is under the jurisdiction of ASTM Committee F14 on Fencesand is the direct responsibility of Subcommittee F14.40 on Chain Link Fence andWire Accessories.Current edition approved June 1,2017.Published June 2017.Originallyapproved in 1963.L
14、ast previous edition approved in 2011 as A491-11.DOI:10.1520/A0491-11R17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM w
15、ebsite.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with
16、internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 6.Weave6.1 The wire shall be woven throughout in the form ofapproximately uniform square mesh,having parallel sides andhorizontal and vertical diagonals of approximately uniformdimensions.The top and bottom of the fabric shall be knuckledor twis
