1、Designation:D375/D375M95(Reapproved 2017)Standard Specification forAsbestos Roving1This standard is issued under the fixed designation D375/D375M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in p
2、arentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers asbestos roving having aminimum of 75 mass%asbestos fiber,excluding the mass ofother inorganic reinforcing strands which ma
3、y be present.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conform
4、ancewith the standard.1.3 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and for those with whom they come into contact.In addition to other precautions,when working with asbestos-cement products,minimize the dust that results
5、.For informa-tion on the safe use of chrysoltile asbestos,refer to“Safe Useof Chrysotile Asbestos:A Manual on Preventive and ControlMeasures.”21.4 The following safety hazards caveat pertains only to thetest methods,Section 13,described in this specification:Thisstandard does not purport to address
6、all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.For specific safety hazard warning,see 1.3.1.5 This international
7、 standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.
8、Referenced Documents2.1 ASTM Standards:3D76 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD861 Practice for Use of the Tex System to Designate LinearDensity of Fibers,Yarn Intermediates,and YarnsD1118 Test Method for Magnetic Rating of Asbestos Fiberand
9、Asbestos TextilesD1918 Test Method for Asbestos Content of Asbestos Tex-tilesD2100 Specification for Asbestos Textiles Used for Electri-cal Insulating PurposesD2260 Tables of Conversion Factors and Equivalent YarnNumbers Measured in Various Numbering SystemsD2946 Terminology for Asbestos and Asbesto
10、sCementProducts3.Terminology3.1 For definitions of other textile terms used in thisspecification,refer to Terminology D123.For asbestos terms,refer to Terminology D2946.3.2 Definitions:3.2.1 asbestos fiber,nthe hydrous magnesium silicateserpentine mineral designated as chrysotile and having theempir
11、ical formula Mg3Si2O5(OH)4.3.2.2 asbestos roving,nan assemblage of carded asbestos,with or without other fibers,rubbed into a single strand withouttwist.3.2.3 asbestos roving construction number,na systemdesigned to show the construction,namely,the cut of the singleroving and whether reinforcements
12、are present.3.2.3.1 DiscussionRovings up to 9-cut,inclusive,have3-digit construction numbers:the first digit indicates the cut,the second digit,the number of plies(always 1),and the thirddigit,the number of reinforcements.Rovings of 10-cut and1This specification is under the jurisdiction of ASTM Com
13、mittee C17 onFiber-Reinforced Cement Products and is the direct responsibility of SubcommitteeC17.03 on Asbestos-Cement Sheet Products and Accessories.Current edition approved June 1,2017.Published July 2017.Originally approvedin 1933.Last previous edition approved in 2009 as D375/D375M 95(2009)1.DO
14、I:10.1520/D0375_D0375M-95R17.2Available from The Asbestos Institute,http:/ 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 webs
15、ite.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of Intern
16、ational Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 over have 4-digit construction numbers;the first 2 digitsindicate the cut,the third digit,the number of plies(always 1),and the fourth digit,the number of reinforcements.Rovings containing reinforcements are designated by theroving construction number followed by the description of thereinforcing strand.Examples:No.1010 roving10-cut,no reinforcementNo.1011 roving10-cut,
