इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 10738-4-1 (1991): Flanges for Waveguides, Part 4: Flanges for Circular Waveguides, Section 1: General [LITD 6: Wires, Cables, Waveguides and Accessories] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 10738 ( Pad 4/Set 1 ) : 1991 Indian Standard SPECTFKATION FOR FLANGES FOR WAVEGUIDES PART 4 FLANGES FOR CIRCULAR WAVEGUIDES Section 1 General UDC 621.643’412 : 621.372-822 @ BIS 1991 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 Price Group 1 evaworciM stnenopmoC and seirosseccA lanoitceS ,eettimmoC DTL 19 FOREWORD sihT naidnI (-dradnatS traP ceSI4 1 ) was detpoda yb eht uaeruB fo naidnI Standards, retfa eht tfard dezilanif yb eht evaworciM stnenopmoC and seirosseccA lanoitceS eettimmoC had neeb devorppa yb eht scinortcelE and noitacinummoceleT noisiviD .licnuoC sihT standard shall eb daer ni noitcnujnoc htiw SI 10738 ( traP 1 ) : 1983 segnalF rof sediugevaw : traP 1 lareneG stnemeriuqer and .stset tnereffiD sepyt fo ediugevaw segnalf era derevoc ni a seires fo standards gnitsisnoc fo eht being gniwollof laudividni parts fo SI 10738 : traP 1 lareneG stnemeriuqer and stset traP 2 segnalF rof yranidro ralugnatcer sediugevaw traP 3 segnalF rof talf ralugnatcer sediugevaw traP 4 segnalF rof ralucric sediugevaw traP 5 segnalF rof muidem talf ralugnatcer sediugevaw traP ~6 segnalF rof erauqs sediugevaw sihT traP 4 fo SI 10738 seires is gnieb issued ni owt snoitces as swollof : noitceS 1 lareneG noitceS 2 egnalF epyT J elihW gniraperp this standard assistance has neeb devired morf CEI buP 4-451 ( 1969 ) segnalF‘ rof sediugevaw : traP 4 tnaveleR noitacificeps rof segnalf rof ralucric sediugevaw issued yb eht -retnI lanoitan lacinhcetortcelE .noissimmoC roF eht esoprup fo gnidiced rehtehw a ralucitrap tnemeriuqer fo this standard is deilpmoc ,htiw eht lanif ,eulav devresbo ro ,detaluclac gnisserpxe eht tluser fo a tset ro ,sisylana shall eb dednuor ffo ni ecnadrocca~ htiw SI 2 : 1960 seluR‘ rof gnidnuor fo laciremun seulav ( Revised )‘. ehT rebmun fo tnacifingis secalp deniater ni eht dednuor ffo eulav dluohs eb eht emas as that fo eht deificeps eulav ni this standard. IS 10738 ( Part 4/Set 1 ) : 1991 Indian Standard SPECIFICATIONF OR FLANGESFOR WAVEGUDES PART 4 FLANGES FOR CIRCULAR WAVEGUIDES Section 1 General 1 SCOPE 8.1.1 ehT stnemeriuqer rof eht scitsiretcarahc gnitacol ,seloh shank retemaid fo gnixif stlob desu sihT naidnI dradnatS ( traP teS/4 1 ) seificeps rof ,noitacol and noitaler neewteb shank and lareneg stnemeriuqer and stset rof segnalf rof gnitacol eloh retemaid era ton elbacilppa esuaceb ralucric .sediugevaw noitacol is ton detceffa yb stlob and .seloh 2 SECNEREFER ehT ssorc noitces fo eht pilcric nwohs ni eht gniward ni noitceS 2 is nevig rof noitamrofni .ylno ehT gniwollof standards evah neeb derrefer ot ni ehT lautca noitces-ssorc yam assume yna epahs this standard : that seod ton ylesrevda tceffa eht gnitam fo eht .segnalf IS No. Title wolloH cillatem -evaw 4493 8.1.2 Positioning of the Holes ( traP 7 ) : 1984 sediug : traP 7 ralucriC sediugevaw gninoitisoP fo eht seloh shall eb as deificeps ni noitceS 2 fo traP 4 fo this .seires 10738 segnalF rof -evaw ( traP 1 ) : 1983 sediug : traP 1 lareneG 8.1.3 Flatness of Contact Area stnemeriuqer and stset ehT ssentalf fo tcatnoc aera shall eb retteb than 3 CLTAMILC SEIROGETAC eht seulav nevig woleb : 3.1 snoisivorP fo 3 fo SI 10738 ( traP 1 ) : 1983 Range of Type C Requirements shall .ylppa Waveguide Size (mm) 4 ,SLAIRXITAM CURTSNOC NOIr AND C 14 and regral snoisnemid rednU noitaredisnoc WORK.MANSHlP C 16 ot C 7’82 30’0 c 30 ot c 9’35 20’0 4.1 snoisivorP fo 4 fo SI 10738 ( traP 1 ) : 1983 631Cot65C 10’0 shall .ylppa C 140 and rellams rednU noitaredisnoc 5 NOITANGISED FO SEGNALF FOR noisnemid SEDIUGEVAW 8.1.4 Perpendicularity of the Contact Area 5.1 snoisivorP fo 5 fo SI 10738 ( traP 1 ) : 1983 ehT ytiralucidneprep fo eht tcatnoc aera fo eht shall .ylppa egnalf ot eht sixa fo~ eht ediugevaw shall eb 90 + 52’0 .seerged 6 GNIKRAM 6.1 snoisivorP fo 6 fo SI 10738 ( traP 1 ) : 19 83 8.1.5 Additional Requirements shall .ylppa 8.1.5.1 ehT drawings nwohs ni noitceS 2 era rof detnuom .segnalf nI eht laudividni drawings, eht 7 GNIGAKCAP hguorht epyt gnitnuom fo segnalf ot eht -evaw ediug is nwohs yb yaw fo .elpmaxe ,sihT ,revewoh 7.1 snoisivorP fo 7 fo SI 10738 ( traP 1 ) : 1983 seod ton edulcxe rehtona dohtem fo gnitnuom shall .ylppa fi eht lautca snoisnemid wolla this. 8 STSET 8.1.5.2 nehW gniredro detnuomnu ,segnalf an 8.1 snoisivorP fo 8 fo SI 10738 ( traP 1 ) : llahs ecnawolla dluohs eb edam no emos fo eht deificeps eb elbacilppa tpecxe rof / ni noitidda ot eht snoisnemid ot revoc eht stceffe fo elbissop .gniwollof gninihcam retfa .gnitnuom 1 Standard Mark The esu fo eht dradnatS Mark is denrevog yb eht snoisivorp fo eht Bureau of Indian Standards Act, 1986 and eht seluR and snoitalugeR edam .rednuereht ehT dradnatS Mark no stcudorp derevoc yb an naidnI dradnatS syevnoc eht ecnarussa that yeht evah neeb decudorp ot ylpmoc htiw eht stnemeriuqer fo that standard rednu a llew denifed metsys fo ,noitcepsni gnitset and ytilauq lortnoc hcihw is desived and desivrepus yb SIB and detarepo yb eht .recudorp dradnatS dekram stcudorp era osla ylsuounitnoc dekcehc yb SIB rof ytimrofnoc ot that standard as a rehtruf -efas .draug sliateD fo snoitidnoc rednu hcihw a ecnecil rof eht esu fo eht dradnatS Mark yam eb detnarg ot srerutcafunam ro srecudorp yam eb deniatbo morf eht uaeruB fo naidnI Standards. uaeruB of Indian Standards BIS is a yrotutats noitutitsni dehsilbatse rednu eht Bureau of Indian Standards Act, 1986 ot etomorp suoinomrah tnempoleved fo eht seitivitca fo ,noitazidradnats gnikram and ytilauq noitacifitrec fo sdoog and gnidnetta ot detcennoc srettam ni eht .yrtnuoc Copyright BIS has the thgirypoc fo all its .snoitacilbup oN trap fo eseht snoitacilbup yam eb decudorper ni yna mrof tuohtiw eht roirp noissimrep ni gnitirw fo .SIB sihT seod ton edulcerp eht eerf ,esu ni eht esruoc fo gnitnemelpmi eht standard, fo yrassecen ,sliated hcus as slobmys and ,sezis epyt ro edarg .snoitangised seiriuqnE gnitaler ot thgirypoc eb desserdda ot eht rotceriD ( snoitacilbuP ,) .STB Revision of Indian Standards naidnI Standards era deweiver yllacidoirep and ,desiver nehw yrassecen and ,stnemdnema fi any, era issued morf emit ot .emit sresU fo naidnI Standards dluohs niatrecsa that yeht era ni noissessop fo eht tsetal stnemdnema ro .noitide stnemmoC no this naidnI dradnatS yam ebA tnes ot SIB gnivig eht gniwollof :ecnerefer )7311(91DTL.oN:coD Amendments Issued Since Publication dnemA .oN etaD fo eussI txeT detceffA UAERUB FO 1NDlAN SDKADNATS :sretrauqdaeH Manak ,navahB 9 rudahaB Shah rafaZ Marg, weN ihleD 110002 senohpeleT : 331 01 31, 331 13 75 smargeleT : Manaksanstha ( nommoC ot all seciffO ) lanoigeR :seciffO lartneC : Manak ,navahB 9 rudahaB Shah rafaZ Marg 331 01 31 WEN IHLED 110002 ! 331 13 75 nretsaE : 1114 C.J.T. emehcS IIV M. .P.I.V ,daoR alotkinaM 37 86 62 ATTUCLAC 700054 nrehtroN : SC0 ,644-544 rotceS 35-C HRAGIDNAHC 160036 53 38 43 nrehtuoS : .T.I.C Campus, VI ssorC ,daoR MADRAS 600113 235 02 16 nretseW : ,ayalakanaM 9E MIDC, ,loraM irehdnA ( East 1 YABMOB 400093 6 32 92 95 sehcnarB : .DABADAMHA .EROLAGNAB .LAPOHB .RAWHSENABUHB .EROTABMIOC .DABADIRAF .DABAIZAHG .ITAHAWUG .DABAREDYH JAIPUR. .RUPNAK .ANTAP .MARUPAHTNANAVURIHT Printed at -Progressive Printers, Shahdra, Delhi, Landis