1、Designation:B68799(Reapproved 2016)Standard Specification forBrass,Copper,and Chromium-Plated Pipe Nipples1This standard is issued under the fixed designation B687;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification establishes the requirement
3、s for brassand copper pipe nipples in standard pipe sizes from18to 8 in.,inclusive,in standard lengths,and chromium-plated pipenipples in standard pipe sizes from18to 2 in.,inclusive,instandard lengths.1.1.1 Chromium-plated pipe nipples ordered under thisspecification are intended for interior use i
4、n decorative appli-cations.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesaf
5、ety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B42 Specification for Seamless Copp
6、er Pipe,Standard SizesB43 Specification for Seamless Red Brass Pipe,StandardSizesB456 Specification for Electrodeposited Coatings of CopperPlus Nickel Plus Chromium and Nickel Plus ChromiumB846 Terminology for Copper and Copper AlloysE29 Practice for Using Significant Digits in Test Data toDetermine
7、 Conformance with Specifications2.2 ANSI/ASME Standard:B1.20.1 Pipe Threads,General Purpose(Inch)32.3 Military Standard:MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by Attributes43.Terminology3.1 Definitions:3.1.1 For definitions of terms relating to copper and copperalloys,refer to Te
8、rminology B846.4.Ordering Information4.1 Contracts and purchase orders for product under thisspecification are to contain the following information:4.1.1 ASTM specification designation and year of issue,4.1.2 Type of material(Section 5),4.1.3 Weight of material;regular or extra strong,4.1.4 Diameter
9、;nominal or actual outside diameter,4.1.5 Length;standard or special(8.2 andTable 2),and4.1.6 Quantity;number of pieces or total weight of eachmaterial and size.4.2 The following options are available under this specifi-cation and are to be specified in the contract or purchase orderwhen required:4.
10、2.1 Chromium plated finish,4.2.2 Short Plumbing(hospital)threads,4.2.3 Certification(Section 16),and4.2.4 Test and Inspection Reports,if required(Section 17).4.3 In addition,when material is purchased for agencies ofthe U.S.government,it shall conform to the supplementaryrequirements as defined here
11、in when specified in the contractor purchase order.5.Materials and Manufacture5.1 Copper pipe nipples shall be produced from regular orextra strong pipe conforming to the requirements of Specifi-cation B42.5.2 Brass pipe nipples shall be produced from regular orextra strong pipe conforming to the re
12、quirements of Specifi-cation B43.1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved April 1,2016.Published May 2016.Originallyapproved in 1981.Last previous edi
13、tion approved in 2011 as B687 99(2011).DOI:10.1520/B0687-99R16.2For 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 website.3Av
14、ailable from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4Available from DLA Document Services,Building 4/D,700 Robbins Ave.,Philadelphia,PA 19111-5094,http:/quicksearch.dla.mil.*A Summary of Changes section appears at the end of this stan
15、dardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Chromium-plated pipe nipples shall be produced fromregular weight brass pipe conforming to the requirements ofSpecification B43.6.Chemical Composition6.1 The chemical composition sha
16、ll conform to the require-ments of the specification under which the pipe was ordered.7.Temper7.1 The product temper and its properties and characteristicsshall conform to the requirements of the specification underwhich the pipe was ordered.8.Dimensions,Mass and Permissible Variations8.1 Lengths:8.1.1 The standard lengths and sizes of nipples generallyavailable are shown in Table 2.The availability of such nipplesindicated by pipe size are shown in Table 3.8.1.2 Special lengths and sizes of nip