1、Designation: B687 99 (Reapproved 2011)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 l
2、ast revision. 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 Department of Defense.1. Scope*1.1 This specification establishes the re
3、quirements for brassand copper pipe nipples in standard pipe sizes from18 to 8 in.,inclusive, in standard lengths, and chromium-plated pipenipples in standard pipe sizes from18 to 2 in., inclusive, instandard lengths.1.1.1 Chromium-plated pipe nipples ordered under thisspecification are intended for
4、 interior use in 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 addre
5、ss all of thesafety 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 Specificati
6、on for Seamless Copper Pipe, StandardSizesB43 Specification for Seamless Red Brass Pipe, StandardSizesB456 Specification for Electrodeposited Coatings of Cop-per Plus Nickel Plus Chromium and Nickel Plus Chro-miumB846 Terminology for Copper and Copper AlloysE29 Practice for Using Significant Digits
7、in Test Data toDetermine 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 a
8、nd copperalloys, refer to Terminology B8464. 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
9、or extra strong,4.1.4 Diameter; nominal or actual outside diameter,4.1.5 Length; standard or special (8.2 and Table 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 contra
10、ct or purchase orderwhen required:4.2.1 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
11、the supplementaryrequirements as defined herein when specified in the contractor purchase order.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 Oct. 1, 2011.
12、 Published February 2012. Originallyapproved in 1981. Last previous edition approved in 2005 as B687 99 (2005).DOI: 10.1520/B0687-99R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume in
13、formation, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave.,
14、 Philadelphia, PA 19111-5098, http:/dodssp.daps.dla.mil.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Materials and Manufacture5.1 Copper pipe nipples shall be pr
15、oduced 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 requirements of Specifi-cation B43.5.3 Chromium-plated pipe nipples shall be produced fromregular weight brass pipe
16、 conforming to the requirements ofSpecification B43.6. Chemical Composition6.1 The chemical composition shall 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
17、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 s
18、izes of nipples are permitted to bespecified when required. Standard and special lengths shallconform to the tolerance requirements of 8.1.3.8.1.3 TolerancesNipples with lengths up through 12 in.(305 mm) long shall have a length tolerance of 6116 in. (1.6mm). Nipples over 12 in. long shall have a to
19、lerance of 618 in.(3.2 mm).8.2 Threads:8.2.1 Pipe nipples shall be threaded on both ends with NPTTaper Pipe Threads conforming to the requirements of ANSIB1.20.1, except for close nipples where L4 and V are shorter,due to fewer imperfect threads. It is standard manufacturingpractice on all other nip
20、ple lengths to vary the L4 6 twothreads. All other dimensions, tolerances, and gaging practicesremain the same as ANSI B1.20.1, and the Annex.8.2.1.1 Threads shall be right hand on both ends, exceptwhen otherwise specified.8.2.2 Threads, Chromium-Plated NipplesThreads onchromium-plated nipples shall
21、 be gaged after plating. Threadson18 to 1-in. standard pipe size nipples shall be NPT TaperPipe Threads, in accordance with 8.2.1. Threads on 114 to 2-in.standard pipe size nipples shall be short plumbing (hospital)threads, in accordance with Table 1.On18 to 1-in. standardpipe size nipples, short pl
22、umbing (hospital) threads, if speci-fied, shall be in accordance with Table 1.9. Workmanship, Finish and Appearance9.1 End FinishThe ends of the pipe nipples shall bechamfered on the outside at an angle of 35 6 10 to the centralaxis. (It is standard practice that the18-in. nominal size nipplesneed n
23、ot be chamfered.) Ends shall be cut reasonably square tothe central axis. All burrs on the outside shall be removed.9.2 Chromium PlatingChromium plate on brass nipplesshall meet the requirements of service condition SC I ofSpecification B456, except the equivalent nickel thicknessshall be 0.003 mm.1
24、0. Sampling10.1 Arandom sample of pipe nipples shall be selected fromone production lot in accordance with MIL-STD-105 at In-spection Level II. In terms of defects per 100 units, theAcceptable Quality Level (AQL) shall be 1.5.10.1.1 Production LotA production lot shall be as deter-mined by the manuf
25、acturer, provided that all of the pipe usedin a single production lot shall comply with the provisions ofSection 5 and all of the nipples shall be of the same size,length, type, weight, finish, and thread form.11. Number of Tests and Retests11.1 Allowances for resampling and retesting shall be inacc
26、ordance with the Inspection Level and Acceptable QualityLevels detailed in 10.1.12. Significance of Numerical Limits12.1 For the purpose of determining compliance with thespecified limits for the requirements listed in the followingtable, an observed value shall be rounded as indicated inaccordance
27、with the rounding method of Practice E29:PropertyRounded Unit forObserved or Calculated ValueLinear DimensionsTolerancesnearest unit in the last right-hand significantdigit used in expressing the limiting value13. Inspection13.1 Each sample nipple shall be examined visually toverify conformance with
28、 each of the following requirements:13.1.1 The material is the type and weight of materialspecified,13.1.2 The finish is as specified, if chromium-plated,13.1.3 The ends are reasonably square to the central axisand all burrs have been removed, and13.1.4 Threads are not burred or damaged.13.2 Each sa
29、mple nipple shall be inspected to verify con-formance with each of the following requirements:TABLE 1 Short Plumbing (Hospital) ThreadsA,BNOTEShort plumbing (hospital) threads are normally used only onchromium-plated nipples. The purpose of such threads is that a minimumof thread shall remain expose
30、d after the nipple is screwed into a fitting.NominalPipe Size,NPSOutsideDiameterof Pipe, DThreadsper in.,NOverall ExternalThread Length, L4Inches Threads18 0.405 27 0.26 714 0.540 18 0.33 638 0.675 18 0.33 612 0.840 14 0.43 634 1.050 14 0.43 61 1.315 1112 0.52 6114 1.660 1112 0.52 6112 1.900 1112 0.
31、52 62 2.375 1112 0.52 6AAll dimensions, except threads per inch, in inches.BThis table represents a modification of Table 2 of ANSI B1.20.1; L4is modifiedas shown. E2, L2, and V are modified accordingly. The threads shall meet thegaging requirements of Sections 6 and 11 of this specification.B687 99
32、 (2011)213.2.1 Pipe size,13.2.2 Length,13.2.3 Thread dimensions, and13.2.4 Chamfer.13.3 Chromium PlatingUnless otherwise specificallyagreed upon between the manufacturer and the purchaser, theindividual samples need not be individually inspected as totheir chromium plating. It shall be sufficient fo
33、r the manufac-turer to certify that (a) random nipples from the chromiumplating process have been tested for conformance with Speci-fication B456 (which records shall be retained by the manu-facturer) and do in fact conform and (b) there has been nosignificant change in the chromium plating process
34、since thetests were last run.13.3.1 If inspection of the individual nipples is agreed upon,then it shall be conducted by any method allowed by Specifi-cation B456.13.4 PipeThe pipe from which each production lot ismanufactured shall be of the same size, type, and weight andshall be tested in accorda
35、nce with the applicable ASTM pipespecification. At the option of the manufacturer, the pipe maybe tested by the manufacturer, by the pipe mill that producedthe pipe, or by an independent laboratory.13.5 Source InspectionIf required, source inspection ofthe product by the purchaser shall be establish
36、ed by agreementbetween the manufacturer or supplier and purchaser at the timeof placing the order. In such cases, the nature of the facilitiesnecessary for the inspector to determine that the product is inconformance to this specification shall be included in theagreement. The inspection shall be co
37、nducted so as not tounnecessarily interfere with normal operations.14. Rejection and Rehearing14.1 Rejection:14.1.1 Product that fails to conform to the requirements ofthis specification when inspected by the purchaser or purchas-ers agent, shall be subject to rejection.14.1.2 Rejection shall be rep
38、orted to the manufacturer orsupplier promptly and in writing.14.1.3 In case of dissatisfaction with the results upon whichrejection is based, the manufacturer or supplier is permitted tomake claim for a rehearing.14.2 Rehearing:14.2.1 As a result of product rejection, the manufacturer orsupplier is
39、permitted to make claim for a retest to be conductedby the manufacturer or supplier and the purchaser. Samples ofthe rejected product shall be taken in accordance with thisproduct specification, and subjected to test by both partiesusing the test methods specified in the product specification, or,al
40、ternatively, upon agreement of both parties, an independentlaboratory shall be selected.15. Certification15.1 When specified in the contract or purchase order, thepurchaser shall be furnished certification that samples repre-senting each lot have been tested or inspected as directed in thisspecifica
41、tion and the requirements have been met.16. Test and Inspection Reports16.1 When specified in the contract or purchase order, areport of test and inspection results shall be furnished.17. Packaging and Package Marking17.1 Individual nipples are not normally identified. Nipplespackaged shall have the
42、ir containers legibly marked to showTABLE 2 Pipe Nipples by Length and Pipe SizeType of Nipple1814381234 1114 112 2212 3312 4568Pipe Nipple Lengths, in.A,BClose (cl)3478 1118 138 112 158 134 2212 258 234 278 3318 312112 112 112 112 . . . . . . . . . . . .22222222. . . . . . .212 212 212 212 212 212
43、212 212 212 . . . . . . .33333333333. . . .312 312 312 312 312 312 312 312 312 312 312 . . . . .4444444444444. .412 412 412 412 412 412 412 412 412 412 412 412 412 412 412 .5555555555555555512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512666666666666666677777777777777778888888888888888
44、999999999999999910 10 10 10 10 10 10 10 10 10 10 10 10 10 10 1011 11 11 11 11 11 11 11 11 11 11 11 11 11 11 1112 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12Rightandleft. . 4444444. . . . .ANipples shorter than close nipples are not recommended for pressure application.B1 in. = 25.4 mm.TABLE 3 Pipe
45、Nipple Sizes According to MaterialWeightNominal Pipe Sizes, in.18 to 2in., incl214 to 4in., incl5 and 6in.8in.Regular weight brass X X X XExtra strong brass X X X XRegular copper X X X XExtra strong copper X X . . . . . .Chromium-plated regular brass X . . . . . . . . .B687 99 (2011)3brand or name o
46、f manufacturer, quantity, size, length, type ofmaterial, weight of material (if other than regular), and finish(if chromium-plated).17.1.1 At the manufacturers option, large size, extra longnipples and odd lots are bagged or bundled with tags identi-fying the product as specified in 15.1.17.2 Chromi
47、um-Plated NipplesExcept for close nipples,chromium-plated nipples shall be individually packaged,wrapped, or otherwise protected to ensure against nicking orother cosmetic damage in transit.17.3 Nipples shall be packaged and prepared for shipmentin such a manner as to ensure acceptance by common car
48、rierfor transportation at the lowest rate applicable and to affordprotection from the normal hazards of transportation.18. Keywords18.1 close nipple; pipe nipple; short plumbing (hospital)threadsSUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall apply only when specified by the
49、 purchaser in theinquiry, contract, or order for agencies of the U.S. government.S1. Part Numbering SystemS1.1 This supplement provides a part numbering system forthe identification of standard items for government use ofSpecification B687.NOTE The government encourages the general use of this partnumbering system to achieve maximum parts standardization.S1.2 The part number consists of the document identifierfollowed by the code for the weight of material (regular ore
