1、Designation: C 662 70 (Reapproved 2005)An American National StandardStandard Specification forImpervious Graphite Pipe and Threading1This standard is issued under the fixed designation C 662; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the standardization of the pipesizes and types of threads used to join
3、 impervious graphite pipeand fittings. The thread standards may also be applied toimpervious carbon pipe and fittings. It is limited to physicaldimensions.2. Terminology2.1 Definitions of Terms Specific to This Standard:2.1.1 impervious graphitemanufactured graphite that hasbeen impregnated with a r
4、esinous material to make the finalarticle impervious to liquids in the recommended operatingrange.2.1.2 impervious carbonthe same as impervious graphitewith the exception that the base stock has not been graphitized.3. Requirements for Impervious Graphite Pipe3.1 The eight standard pipe sizes are sh
5、own in Table 1 withpermissible variations in dimensions.3.2 Fig. 1 gives the male thread dimensions for imperviousgraphite pipe.3.3 Fig. 2 gives the female thread dimensions for impervi-ous graphite fittings.4. Keywords4.1 impervious carbon pipe; impervious graphite pipe;threading specifications1Thi
6、s specification is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.F0 on Manufactured Carbon and Graphite Products.Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1970. Last previous
7、edition approved in 1998 as C 662 79 (1998).1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.TABLE 1 Physical Dimensions of Impervious Graphite PipePipeSize(nominalInsideDiameter),in.Typical LimitsLengthAInside Diameter Outside Diamet
8、ermin max min max in.+140mm+60 0in. mm in. mm in. mm in. mm11516 23.8 1116 27.0 13164 37.7 1916 39.7 108 2740.112 1716 36.5 1916 39.7 16164 49.6 2116 52.4 108 2740.211516 49.2 2116 52.4 21116 68.3 21316 71.4 108 2740.321516 74.6 314 82.6 4 101.6 4316 106.4 108 2740.431516 100.0 414 108.0 514 133.4 5
9、12 139.7 108 2740.651516 150.8 614 158.8 7716 188.9 71316 198.4 108 2740.8B8116 204.8 8316 208.0 912 241.3 934 247.7 72 1830.10B 1016 255.6 10316 258.8 1212 317.5 1234 323.9 72 1830.AMaximum curvature12 % of length measured chord to arc.BMachined limits for 8 and 10 in. size pipe. All others are ext
10、ruded to size.PipeSize1112 2346810A1112 2346818 1018B112 2234 4514 712 958 1258D1818532532532532532532E13161316 1116 1516 1516 1916 11516 2316J maxmin1.4361.4301.9061.8982.5892.5813.8993.8875.1495.1377.3197.3069.4269.41212.41912.404K maxmin1.4901.4781.9601.9482.6702.6543.9803.9645.2305.2147.4007.384
11、9.5079.49112.50012.484ThreadsperinchThreaddepth120.0541120.054180.081280.081280.081280.081280.081280.0812AAStandard metric threads have not been established for impervious graphite pipe.FIG. 1 Standard Male Thread Dimensions, (in.)AC 662 70 (2005)2PipeSize1112 2346810A1112 2346818 1018C11114 112 112
12、 134 218 238F158 218 278 414 5916 71516 978 1278G maxmin1.4291.4201.8991.8902.5882.5753.8983.8855.1485.1357.3187.3059.4259.41212.41812.406H maxmin1.4621.4561.9341.9262.6372.6293.9513.9395.2015.1897.3727.3599.4809.46612.47412.459ThreadsperinchThreaddepth120.0449120.044980.067480.067480.067480.067480.
13、067480.0674AAStandard metric threads have not been established for impervious graphite pipe.FIG. 2 Standard Female Thread Dimensions, (in.)AASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this
14、standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years
15、 andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committe
16、e, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C 662 70 (2005)3
