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ASTM_A_929_-_A_929M_-_17.pdf

1、Designation:A929/A929M17Standard Specification forSteel Sheet,Metallic-Coated by the Hot-Dip Process forCorrugated Steel Pipe1This standard is issued under the fixed designation A929/A929M;the number immediately following the designation indicates the yearof original adoption or,in the case of revis

2、ion,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers steel sheet used in the manu-facture of corrugated steel pipe for storm sewers,

3、culverts,drains,and similar uses.The sheet is metallic coated by thehot-dip process.Material for this use is furnished in coils,flatin cut lengths,and corrugated in cut lengths.Many metalliccoated materials are covered in this material specification.Users must determine which product best serves the

4、ir needs.Five different metallic coatings are included:1.1.1 Zinc-coated(galvanized),1.1.2 Zinc-5%aluminum-Mischmetal(Zn-5Al-MM)alloycoated,1.1.3 55%aluminum-zinc(55Al-Zn)alloy coated,1.1.4 Aluminum-coated Type 2(aluminized Type 2),and1.1.5 Aluminum-coated Type 1(aluminized Type 1).1.2 Zinc-coated s

5、heet is available in two coating weightsmasses.Other metallic coatings are available in one coatingweight mass only.1.3 The values stated in either inch-pound units or SI unitsare to be regarded separately as the standard.Within the text,the SI units are shown in brackets.The values stated in eachsy

6、stem are not equivalents;therefore,each system must beused independently of the other.Combining values from thetwo systems may result in nonconformance with the specifi-cation.2.Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zin

7、c or Zinc-Alloy CoatingsA428/A428M Test Method for Weight Mass of Coating onAluminum-Coated Iron or Steel ArticlesA902 Terminology Relating to Metallic Coated Steel Prod-uctsA924/A924M Specification for General Requirements forSteel Sheet,Metallic-Coated by the Hot-Dip ProcessB750 Specification for

8、GALFANE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this specification,referto Terminology A902.The following definitions are as stated inthat terminology:3.1.2 fabricator,nas rela

9、ted to corrugated metal pipe,(1)the organization that produces the finished pipe;or(2)forstructural plate pipe,the organization that processes flat sheetsand other items necessary for the field assembly of finishedproducts.3.1.3 manufacturer,nas related to corrugated metal pipe,the organization that

10、 produces the metal sheet from which pipeis made.3.1.4 purchaser,nas related to corrugated metal pipe,theperson or agency that purchases the finished pipe.3.1.5 DiscussionWith regard to this specification for sheetfor corrugated steel pipe,the fabricator may also be consideredas the purchaser of the

11、 sheet,where that term is used in thisspecification.Such interpretation would not restrict the pur-chaser of the finished pipe from enforcing any provisions ofthis specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 minimized coating structure,na coating character-ized by a finer

12、metallurgical coating structure obtained by atreatment designed to restrict the formation of the normalcoarse grain structure formed during solidification of theZn-5Al-MM coating.3.2.2 regular coating structure,nthe normal coatingstructure resulting from unrestricted grain growth during nor-mal soli

13、dification of the Zn-5Al-MM coating.3.3 Abbreviations:3.3.1 Al T2aluminum-coated Type 23.3.2 Al T1aluminum-coated Type 11This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.17 on Corrugated S

14、teel Pipe Specifications.Current edition approved Feb.1,2017.Published February,2017.Originallyapproved in 1995.Last previous edition approved in 2013 as A929/A929M-01(2013).DOI:10.1520/A0929_A0929M-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service

15、 at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.Unit

16、ed StatesThis international standard was developed in accordance with 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 3.3.3 55Al-Zn55%aluminum-zinc alloy3.3.4 Znzinc3.3.5 Zn-5Al-MMzinc-5%aluminum-Mischmetal alloy4.Classification4.1 The Zn-5Al-MM coating is available in two coatingclasses,as f

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