1、Designation:D335021Standard Specification forPolyethylene Plastics Pipe and Fittings Materials1This standard is issued under the fixed designation D3350;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers the identification of polyeth-ylene plastic pipe and fittings materials in accordance with acell classification syst
3、em.It is not the function of this specifi-cation to provide specific engineering data for design purposes,to specify manufacturing tolerances,or to determine suitabilityfor use for a specific application.1.1.1 Some plastic pipe and fitting PE compounds classifiedby this standard are sold as a base m
4、aterial and then combinedwith other material(s)(for example,color or additive concen-trate)by the pipe or fitting manufacturer into a final classifiedcompound either prior to or during production of the finalarticle.This standard,excluding the requirements of Table 1,properties 5 and 6,and 6.1.1,can
5、 be used for propertyverification of the incoming base material(s)in accordancewith 8.1.1.1.2 In the case of PE compounds sold as the compoundclassified by the standard,see 8.1 regarding property verifica-tion of the incoming classified compound.1.1.3 Compounds with a cell classification value other
6、 than0for the Hydrostatic Strength Classification(property 6)relyon a defined formulation.The composition of the definedformulation can be obtained from the owner of the formulation.NOTE1Deviations from the defined formulation may affect theHydrostatic Strength Classification.1.2 Polyethylene plasti
7、c materials,being thermoplastic,arereprocessable and recyclable(Note 3).This specification al-lows for the use of those polyethylene materials,provided thatall specific requirements of this specification are met.NOTE2The notes in this specification are for information only andshall not be considered
8、 part of this specification.NOTE3See Guide D5033 for information and definitions related torecycled plastics.1.3 The values stated in SI units are to be regarded asstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility
9、of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE4There is no known ISO equivalent to this standard.1.5 For information regarding molding and extrusion mate-rials see Specifica
10、tion D4976.For information regarding wireand cable materials see Specification D1248.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Gui
11、des and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD746 Test Method for Brittleness Temperature of Pla
12、sticsand Elastomers by ImpactD790 Test Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD1238 Test Method for
13、 Melt Flow Rates of Thermoplasticsby Extrusion PlastometerD1248 Specification for Polyethylene Plastics ExtrusionMaterials for Wire and CableD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1603 Test Method for Carbon Black Content in OlefinPlasticsD1693 Test Method for En
14、vironmental Stress-Cracking ofEthylene PlasticsD1898 Practice for Sampling of Plastics(Withdrawn 1998)31This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved July 1,2021
15、.Published July 2021.Originally approvedin 1974.Last previous edition approved in 2014 as D3350 14.DOI:10.1520/D3350-21.2For 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 t
16、he standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*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.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of Interna