1、Designation:C541/C541M98(Reapproved 2011)1Standard Specification forLinings for Asbestos-Cement Pipe1This standard is issued under the fixed designation C541/C541M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revi
2、sion.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEUnits information was editorially corrected in January 2012.1.Scope1.1 This specification covers requirements for plastic liningsto be ap
3、plied to asbestos-cement pipe,designed for specialservice in carrying corrosive fluids.This specification alsocovers methods of testing plastic lining material as well assections of lined pipe.The requirements established by thisspecification shall serve as a guide in,but not the sole basis for,judg
4、ing the suitability of the product for a particular service.The selection of the material should include consideration ofperformance in similar applications or testing under the in-tended service condition.NOTE1To determine the suitability of the product for a particularservice or corrosive fluid,re
5、fer to the manufacturer for specific recom-mendations.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
6、the two systems may result in non-conformancewith 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-cemen
7、t products,minimize the dust that results.For informa-tion on the safe use of chrysotile asbestos,refer to“Safe Use ofChrysotile:A Manual on Preventive and Control Measures.”21.4 The following precautionary caveat pertains only to thetest method portion,Section 9,of this specification:Thisstandard d
8、oes not purport to address 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.2.Referenced Documents2.1 ASTM Standar
9、ds:3D543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD714 Test Method for Evaluating Degree of Blistering ofPaintsD2946 Terminology for Asbestos and AsbestosCementProducts3.Terminology3.1 Definitions:3.1.1 couplingfitting made from a larger diameter pipe ofat least the sam
10、e type and class,for joining asbestos-cementpipe that,when properly installed with the proper accessories,develops a joint equivalent in strength and serviceability to thepipe joined.3.1.2 lotquantity of pipe of a given size and class manu-factured during the same shift.3.1.3 plastic lininga lining
11、formed principally from ther-moplastic or thermosetting polymer.The term“plastic coat-ing is synonymous with the term“plastic lining with respectto composition.3.2 Additional terminology is presented in TerminologyD2946.4.Adhesion Requirements4.1 Thermosetting polymer linings and those thermoplastic
12、linings that do not rely on mechanical means to hold them tothe pipe wall shall have a strong permanent bond to the pipewall.No sign of peeling or any other form of separation of thelining from the pipe wall is permissible when tested inaccordance with 9.2.1.4.2 If bubbles or blisters appear after t
13、esting and are smallerand fewer than Reference Standard 6F of Test Method D714,apull-out test shall be performed in accordance with 9.2.2.Theadhesion shall be considered acceptable if the results from the1This specification is under the jurisdiction of ASTM Committee C17 onFiber-Reinforced Cement Pr
14、oducts and is the direct responsibility of C17.03 onAsbestos-Cement Sheet Products and Accessories.Current edition approved Nov.1,2011.Published January 2012.Originallyapproved in 1964.Last previous edition approved in 2006 as C541 98(2006).DOI:10.1520/C0541_C0541M-98R11E01.2Available from The Asbes
15、tos 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 website.Copyright ASTM International,100 Barr Harbor Drive
16、,PO Box C700,West Conshohocken,PA 19428-2959.United States1 pull-out tests exceed 2.75-MPa 400-psi stress or if at least75%of the fractured surface is covered by asbestos cementpulled from the substratum.Retesting shall be required if thefailure occurs between the metal contact piece and the lining.Samples with bubbles or blisters that are larger and more densethan Reference Standard 6F shall be considered rejected.NOTE2Pipes producing such bubbles or blisters during testing maybe expected to ex
