I nternational Standard (f@ 6758 0 * 4 4! l ! ig! lb I NTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEIQlYHAPOAHAR OPrAHH3AUMR I lO CTAHAAPT~3AlW4 ORGANlSATlON tNTERNATlONALE DE NORMALISATION Welded[.]
I n tern ati on al I N TE RN ATI ON AL ORG AN I ZATI ON Wel d ed Tu bes Fi rst iz i st eel so u d ks en ed i t i on U DC Descri pt ors FOR eci er - h eat S TAN D AR D I ZATI ON M E I Ql YH AP OAH AR t u bes for Bch an g eu rs de OP r AH H AU M R h eat IlO (f@ 6758 *4! l !4 i g! l b CTAH AAP T~ Al W4 ORG AN l S ATl ON t N TE RN ATl ON ALE DE N ORM ALI S ATI ON exch an g ers ch al eu r 980- 09- 62 643 : : pou r St an d ard 669 8 exch an g ers, st eel : - 71 t u bes, s mo ot h Ref t u bes, we l d e d t u bes, al l oy st eel s, u n al l oyed st eel s, N o I S0 d i men si on s, 75 - ( E) mass, d i men si on al t ol eran ces $j s Pri ce bas e d on pag es Foreword I S0 ( the I n ternati on al n ati on al st an dards n ati onal St an d ard s bod y i nterested ri g ht to an d be Draft the I S0 carri ed on ou t for that for Stan dardi zati on ) m e m be r th rou g h wh i ch a bodi es) I S0 wi th by before al so th e thei r a t ake federati on devel opi n g h as E very been set org ani zati on s, part techn i cal accept an ce in the m em be r up h as th e g overn men t al work com mi t t ees as of I nter- are I n ternati on al ci rcu l ated St an d ards to by Cou n ci l St an d ard an d been I S0 fi tti ngs, approved 6756 an d by the was was devel oped ci rcu l ated m e m ber bod i es to by th e of th e Tech n i cal m e m be r fol l owi n g Comm i t t ee bod i es in cou n tri es I n di a Rom an i a Au st ri a I srael Sou t h Bel g i u m I tal y Spai n Afri ca, Korea, Ch i l e Mexi co Swi tz erl an d Czech osl ovaki a Net h erl an d s Un i ted Den m ark New USSR Fi n l an d N orway Fran ce Pol an d bodi es g rou n d s of th e fol l owi ng of expres sed di sapproval : J apan USA I n t ern at i on al in Org an i zat i on Swi t zerl an d for St an d ard i z at i on , Rep of Swed en Zeal an d cou n tri es 5, 979 : Can ad a m e m be r Rep I SO/TC J ul y Au stral i a tech n i cal Pri n ted of commi t t ees I @ worl dwi d e work commi t t ee I n ternati onal I SO, ad opt ed approval is Th e tech n i cal tech n i cal commi t t ee l i son St an dard s bod i es I ntern ati onal h as in for ( I S su bj ect represen ted Met al pi pes on a I ntern ati onal m e m be r Th e is in n on - g overn men tal , the It Org an i zati on i nsti tu tes 990 Ki n g d om of the d ocu men t I N TERN ATI ON AL We l d e d st eel Scope I S0 STAN D ARD an d t u bes fi el d of for h eat I Th i s pl n al l oyed I ntern ati on al en d st eel s i n ten ded wel d ed Au st en i t i c appl i cati on ( i n cl u di n g for Th i s i n ten ded Stan d ard tu bes u se in au sten i ti c th e exposu re St an d ard to the of d oes u n al l oyed steel s) h eat an d wh i ch are cover st eel Ot h er g rad es su ppl i ed Referen ces I S0 26041 3, by of steel ag reemen t tu bes Di men si on s, f rom TW47, I S0 bet ween mas s es Di men s i on s Tabl e St eel TW46, TW53 , TW57, TW56 , 2604, th e Part s an d man u fact u rer 5, an d m ay th e be pu r- an d tol eran ces fl ame : ch aser exch an g ers n ot stai n l ess TW6 ch aracteri st i cs f rom st n l ess stru ct i on I n ternati on al for speci fi es man u fact u red ( E) exch an g ers TW60 , of 6766- 960 prod u ct s for pressu re pu rposes - an d - mas s e s Un al l oyed Qu al i t y an d al l oyed Th i ckn esses, steel s mm Ou t si d e req u i remen t s - Part : El ect ri c resi stan ce an d i n d u cti on d i amet ers Wel d ed tu bes I,2 Mas se s I S0 26041 5, St eel req u i remen t s stai n l ess - steel produ cts Part for : pressu re pu rposes Lon g i t u di n al l y wel d ed - 2604/5 I S0 26041 that th e per uni t kg /m l en g t h , au sten i t i c tu bes N OTE sh al l I S0 Qu al i t y Materi al Tu bes mm be to Th ey an d to th e req u i remen t s sh al l test be to cat eg ory II of test categ ory or for IV I S0 I S0 III 26041 or 26041 5, - or V See al so Tabl e th e an n ex - Au st en i t i c st eel s st n l ess for Th i ckn esses, except mm Ou t si d e be h yd rau l i c repl aced by a test may, at th e n on - destru ct i ve opti on test of wh i ch th e man u fact u rer, en su res equ i val en t d i amet ers l /3 ,2 Th e per u ni t ti g h tn ess steel s sh al l preferabl y be sel ect ed f rom the fol l owi n g , 445 20 , 64 Al l oyed : : TW2 , TW26 , TW5 , TW3 TWSH , l en g t h , - kg /m , 77 , 70 0, 737 , 90 I,1 0, 37 ,1 46 - - : 25 U n al l oyed 32 mm Mas se s l eak TWI O N OTE 75 30 - ,1 , 40 , 79 2, 38 - 46 , 81 2, 79 - Se e al so th e an n ex I S0 6756- 960 ( E) Tol eran ces Th e t u bes sh al l t ol eran ces on t h i ckn ess be su bj ect ou tsi de i n cl u de to th e tol eran ces d i amet er i n cl u de g i ven oval i ty bel ow an d Th e th ose on Len g t h Wh ere an ce l en g th on is l en g th speci fi ed sh al l be “exact ” or “ cu t l en g th ”, th e eccen tri ci ty Tol eran ces Len g th + Ou t si d e Up d i amet er U n al l oyed tol er- : an d to an d i n cl u di n g 3, O mm Of Xl m m al l oyed steel tu bes Ove r 000 000 mm up to an d i n cl u d i n g + mm 4, mm Tol eran ce Di amet er Up to an d i n cl u di n g 20 + mm 0, l O mm Ove r 000 mm up to an d i n cl u di n g + Ove r 20 up to an d Au st en i t i c i n cl u d i n g stai n l ess 38 st eel f mm C OOm m mm 60 mm Over t u bes 000 mm up to an d i n cl u d i n g + 7, mm 5000mm Cl ass : Over 006 mm up to an d i n cl u d i n g + Tol eran ce Di amet er 30 mm 8000mm Up to an d Over Cl ass 20 i n cl u di n g up to 20 an d mm i n cl u d i n g 38 mm f 0, mm * 0, 20 mm : Desi g n ati on to an d i n cl u di n g 30 + mm Th e t u bes 30 up to an d i n cl u d i n g 38 + mm 0, tol eran ce tu bes % on t h i ckn ess, ( mi n i mu m are tol eran ce + su ppl i ed sh al l to appl y a 0, excl u d i n g mm) except mi n i mu m the th e wel d , wh ere, t h i ckn ess by wh en sh al l th e I ntern ati on al data St an d ard sh al l be : “tu be”; referen ce c) d i men si on s ext ern al wi t h th e sh al l be wel d ou t si d e re mo ve d u pset of th at be th e th e removed tu be h ei g h t an d compl et el y, th e d oes i n tern al not i e wel d exceed Tu be fl u sh 20 u pset for tu bes wi th ou tsi d e d i amet er of < 20 mm 0, mm for t u bes wi th ou tsi de d i amet er of > 20 mm Th e the t h i ckn esses in mas s e s me an are St an dard ; in mi l l i met res ( ou tsi d e d i amet er an d an d val u es req u i red mas s e s Wh e n to type be per u ni t l en g th mi n i mu m i n creased i n tabl es t h i ckn esses by % compl yi n g mm an d are a wi t h t h i ckn ess by an d speci - Th i s n ati ves referri n g di n g to Th e 6758, of x I n tern ati onal pu rch aser th ereto; I S0 h avi n g mm, mad e an ou t si d e of steel d i amet er TW wi l l of be : Tu beI SO6758- 2g - I n ternati onal : d esi g n at ed : mm expressed steel Exampl e 0, 25 N OTE th i s 20 sh al l su rface so to th i ckn ess) ; fol l owi n g % th i s be ag reemen t , fi ed, d en omi n at i on b) d) are in fol l owi n g : + Th e th e Th i ckn ess Th e + by mm a) 2 speci fi ed mm d esi g n ated Over ord eri n g Tol eran ce Di amet er Up for if no man u fact u rer’ s 2- l W5 St an d ard sh al l state i n di cati on ch oi ce provi d es in th e i s g i ven , order for th e d el i very s o me al ter- req u i remen t s wi l l be accor- I S0 75 - 9 ( E) An n e x Me tri c it is recog n i zed tu be to Th e se th at th e tu be- sh eet d i me n si o n s th i ckn e sse s) sh al l d i me n si o n s d i me n si o n s cl earan ces, are be in tabl e parti cu l arl y i n terch an g eabl e su bj ect th e to wi th - Th e m as se s are to be cal cu l ated On l y in th e may be l atter for req u i red were correspon d i n g between Ou tsi d e N OTE bel ow wh e n ag reemen t ) correspon d i n g i n ch to wh en ori g i n al l y d i me n si o n s man u factu rer an d i n ch re- tu bi n g prod u ced Th e d i men si o n s e xi sti n g in i n ch d i ti on s h eat e xch an g e rs to sati sfy th e cri ti cal si ze s of d el i very (i n parti cu l ar tol eran ces on pu rch aser d i ame ters stai n l e ss accord an ce wi th steel I S0 tu bes 4200