council direct septemb approxim law member state relat seamless unalloi aluminium aluminium alloi ga cylind eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe member state construct inspect ga cylind subject mandatori provis differ member state hinder trade cylind approxim provis council direct eec juli approxim law member state relat common provis pressur vessel method inspect amend act access lai eec pattern approv verif procedur vessel accord direct lai technic requir compli eec type seamless unalloi aluminium aluminium alloi ga cylind capac litr order import market restraint undergo inspect affix mark sign laid adopt direct articl direct appli seamless unalloi aluminium aluminium alloi ga cylind form singl piec capabl refil transport capac litr inclus design compress liquefi dissolv gase ga cylind hereinaft refer quot cylind quot direct appli cylind manufactur aluminium alloi guarante minimum tensil strength greater mm cylind metal ad base seal articl purpos direct quot eec type cylind quot cylind design manufactur satisfi requir direct direct eec articl member state ground relat construct inspect cylind mean direct eec direct refus prohibit restrict place market put servic eec type cylind articl eec type cylind subject eec pattern approv eec type cylind subject eec verif except cylind hydraul test pressur bar capac litr articl amend adapt section annex annex direct technic progress oj oj oj oj adopt accord procedur laid articl direct eec articl procedur laid articl direct eec appli section annex direct articl member state bring forc law regul administr provis need order compli direct month notif forthwith inform commiss thereof member state ensur text provis nation law adopt field cover direct commun commiss articl direct address member state brussel septemb council presid barri direct notifi member state septemb annex term symbol annex yield stress purpos direct yield stress valu calcul pressur part aluminium alloi proof stress rp stress rise proport elong equal gaug length test piec unalloi aluminium unharden state proof stress purpos direct quot burst pressur quot mean pressur plastic instabl maximum pressur obtain pressur burst test symbol annex mean ph hydraul test pressur bar pr cylind bust pressur measur burst test bar prt calcul minimum theoret burst pressur bar minimum yield stress guarante cylind manufactur mm rm minimum tensil strength guarante cylind manufactur mm calcul minimum thick wall cylindr part cylind mm nomin extern diamet cylind mm rmt actual tensil strength mm mandrel diamet bend test mm technic requir materi heat mechan treatment aluminium alloi unalloi aluminium defin method manufactur nomin chemic composit heat treatment undergon cylind resist corros mechan properti manufactur give inform take account requir list chang inform deem correspond chang type materi purpos eec pattern approv permit manufactur cylind unalloi aluminium aluminium aluminium alloi chemic composit set tabl undergon heat mechan treatment list tabl tabl gt pic file quot quot gt tabl gt pic file quot quot gt aluminium alloi manufactur cylind provid pass corros resist test annex ii cylind manufactur obtain provid cast analysi certif materi manufactur cylind opportun make independ analys analys carri specimen semi finish product suppli cylind manufactur finish cylind decid specimen cylind permiss specimen cylind previous chosen mechan test pressur burst test heat mechan treatment alloi refer process manufactur cylind finish machin artifici ag manufactur characterist final treatment carri nomin temperatur solut artifici ag nomin durat time effect spent solut artifici ag temperatur heat treatment manufactur compli characterist limit solut temperatur artifici ag temperatur durat time effect spent solut artifici ag manufactur rang temperatur differ extrem valu exceed extrem valu nomin durat time effect spent intermedi temperatur nomin durat time effect spent determin linear interpol durat place solut linear interpol logarithm time durat artifici ag manufactur carri heat treatment temperatur includ rang durat time effect spent vari nomin durat calcul manufactur characterist final heat treatment carri file submit purpos eec verif addit final heat treatment manufactur heat treatment carri manufactur cylind includ quench artifici ag manufactur characterist heat treatment carri temperatur exceed take account differ part cylind form oper extrus draw head format temperatur metal exce heat treatment temperatur higher posit section form bodi undergon cold work degre cold work gt pic file quot quot gt initi section final section manufactur compli characterist heat treatment form limit durat heat treatment temperatur degre cold work section undergon cold work diamet cylind equal mm diamet mm heat treatment manufactur rang temperatur differ extrem valu exceed extrem valu nomin durat time effect spent intermedi temperatur nomin durat time effect spent determin linear interpol manufactur carri heat treatment temperatur includ rang durat time effect spent vari nomin durat calcul manufactur characterist final heat treatment carri form process file submit purpos eec verif manufactur opt rang temperatur heat treatment accord purpos eec pattern approv present set cylind made cylind undergon heat treatment lowest temperatur envisag made cylind undergon heat treatment highest temperatur shortest durat calcul pressur part thick cylindr part ga cylind calcul mean formula gt pic file quot quot gt smaller valu rm gt pic file quot quot gt thick shape bottom top end satisfi requir test laid burst test pressur cycl test order obtain satisfactori stress distribut thick cylind wall increas progress transit section cylindr part base bottom thicker cylindr wall construct workmanship thick cylind check condit intern extern surfac inspect manufactur order verifi wall thick point draw intern extern surfac cylind free defect advers affect oper safeti cylind round cylindr shell limit differ maximum minimum diamet cross section averag diamet maximum deviat cylindr part shell straight line exce mm metr length cylind footr provid suffici strong manufactur materi regard corros compat type materi cylind made shape footr give cylind adequ degre stabil footr water accumul permit water penetr ring cylind test mechan test requir set mechan test carri accord euronorm euronorm tensil test steel euronorm brinel hard test euronorm bend test steel euronorm tensil test steel sheet strip mm thick euronorm bend test steel sheet strip mm thick gener requir mechan test check qualiti metal ga cylind carri metal finish cylind type test evalu test result test cylind carri tensil test longitudin direct band test circumferenti direct tensil test test piec tensil test carri conform provis chapter euronorm mm thick chapter euronorm mm thick case gaug width length test piec mm irrespect thick test piec face test piec intern extern wall cylind machin regard alloi refer alloi refer elong fractur regard alloi refer elong fractur tensil test carri singl test piec cylind wall tensil test carri test piec distribut uniformli cylind wall result individu averag measur case unalloi aluminium elong fractur obtain tensil strength rm yield stress determin tensil test accord cylind calcul obtain yield stress bend test bend test carri test piec obtain cut ring width equal part case width test piec mm ring machin edg round radiu thick test piec chamfer angl bend test carri mandrel diamet roller separ distanc test insid face ring remain contact mandrel test piec crack bent inward mandrel insid edg farther diamet mandrel diagram appendix ratio diamet mandrel thick test piec exce valu tabl gt pic file quot quot gt hydraul pressur burst test test condit cylind examin test carri bear mark section hydraul pressur burst test carri success stage test rig pressur increas rate cylind burst curv pressur variat time record test carri room temperatur stage increas pressur constant level plastic deform start rate exce bar sec start plastic deform stage deliveri pump phase maintain constant cylind burst interpret test interpret pressur burst test involv examin pressur time curv determin burst pressur examin tear shape edg verif case cylind concav base base cylind revers measur burst pressur pr greater gt pic file quot quot gt burst test fragment cylind main tear brittl type edg fractur radial slope relat diametr plane displai contract fractur accept conform descript cylind thick mm greater part fractur unmistak longitudin fractur multipl branch factur circumferenti develop side main part fractur extend part cylind time thicker maximum thick measur halfwai cylind cylind convex base fractur reach centr cylind base cylind thick mm greater part fractur longitudin tear reveal obviou defect metal pressur cycl test cylind subject test bear mark section test carri corros fluid cylind guarante manufactur repres minimum valu design test cyclic maximum cyclic pressur equal pressur ph third thereof lower cyclic pressur exce upper cyclic pressur minimum number cycl maximum test frequenc shown tabl gt pic file quot quot gt temperatur measur outer wall cylind exce test test consid satisfactori cylind attain requir number cycl develop leak hydraul test water pressur cylind increas rate pressur ph reach cylind remain pressur ph long make establish pressur show tendenc fall leak test cylind show perman deform test cylind fulfil test requir reject check homogen cylind test involv check point metal extern surfac cylind differ hard hb check carri transvers section cylind head base evenli space point check homogen batch test carri manufactur involv check mean hard test mean error made choic origin billet carri heat treatment check base meridian section made base cylind polish examin magnif cylind regard defect presenc fissur detect regard defect dimens pore inclus present reach valu consid pose threat safeti eec pattern approv eec pattern approv refer articl direct issu type famili cylind quot famili cylind quot mean cylind factori differ length limit minimum length time extern diamet cylind maximum length time length test cylind applic eec pattern approv famili cylind submit document check make member state batch batch cylind accord number cylind requir test refer addit inform requir member state applic type heat treatment mechan treatment temperatur durat treatment provid cast analysi certif materi manufactur cylind eec pattern approv process member state verifi calcul correct thick wall cylind test meet requir measur transvers section longitudin section base head requir compli requir compli cylind select member state intern extern surfac cylind free defect make unsaf carri test cylind select test resist corros intercrystallin corros stress corros test piec annex ii test cylind length cylind mm tensil test longitudin direct bend test carri test piec upper lower region shell test cylind test cylind test cylind test sampl cylind result check satisfactori member state issu eec pattern approv certif accord model annex iii direct eec verif purpos eec verif cylind manufactur provid inspect bodi eec pattern approv certif cast ingot analysi certif materi manufactur cylind mean identifi cast materi cylind made document relat heat treatment mechan treatment state treatment appli accord list cylind give number inscript requir section eec verif inspect bodi ascertain eec pattern approv certif obtain cylind conform check document give data materi check technic requir set section met check extern intern visual examin cylind construct check carri manufactur accord satisfactori visual examin cover cylind manufactur carri intercrystallin corros resist test test piec test piec section head bodi base accord section annex ii alloi refer annex carri test check inform suppli manufactur list refer correct mean random check assess result check homogen batch carri manufactur accord result check satisfactori inspect bodi issu eec verif certif conform model annex iv type test prescrib cylind random batch cylind part thereof made cast undergon heat treatment ident circumst cylind subject test mechan test test prescrib burst test prove test carri incorrectli measur error made test repeat test prove partial unsatisfactori investig manufactur supervis inspect bodi failur due heat treatment appli batch reject failur due heat treatment appli manufactur subject cylind batch heat treatment treatment event manufactur carri check provid inspect bodi carri test provid result test carri treatment satisfi requir direct select specimen test carri presenc supervis repres inspect bodi respect test fourth indent approv bodi confin repres select specimen examin result test carri cylind batch subject hydraul test presenc supervis repres inspect bodi exempt eec verif respect cylind refer articl direct accord articl direct eec test inspect oper prescrib carri manufactur respons manufactur provid inspect bodi document mention eec pattern approv test inspect report mark inscript mark inscript section affix head cylind respect cylind capac litr mark inscript affix head suffici strong part cylind respect cylind diamet mm mark mm high notwithstand requir section annex direct eec manufactur make eec pattern approv mark order cylind refer articl direct gt pic file quot quot gt cylind subject eec pattern approv gt pic file quot quot gt notwithstand requir section annex ii direct eec inspect bodi affix eec verif mark order gt pic file quot quot gt inscript relat construct metal number indic mm calcul base hydraul test test pressur bar symbol quot bar quot type cylind mass cylind includ integr part exclud valv tap kilogram minimum capac guarante manufactur cylind litr figur mass capac decim place round capac mass origin capit letter indic countri origin manufactur mark serial number diagram show exampl mark inscript appendix appendix gt pic file quot quot gt appendix illustr bend test gt pic file quot quot gt annex ii corros test test assess suscept intercrystallin corros method consist simultan immers specimen finish cylind test corros solut examin etch time order detect sign intercrystallin corros determin natur degre corros propag intercrystallin corros determin metallograph polish surfac cut transvers etch surfac take specimen specimen head bodi base cylind figur test solut defin solut defin carri metal part cylind specimen gener shape dimens figur face sawn band carefulli trim fine file surfac correspond outer face cylind left rough manufactur state prepar surfac corros etch product requir hno analysi densiti hf analysi densiti de ioniz water method prepar solut beaker hno cm hf cm cm bring solut temperatur treat specimen suspend aluminium wire solut minut wash run water de ioniz water immers specimen nitric acid defin minut room temperatur remov copper deposit form rins de ioniz water prevent oxid specimen plung prepar corros bath intend perform test corros solut discret inspect bodi sodium chlorid hydrogen peroxid solut sodium chlorid hydrochlor acid solut prepar corros solut solut product requir nacl crystal analysi volum medicin kmno analysi analysi densiti de ioniz water titrat hydrogen peroxid hydrogen peroxid stabl essenti check titr time cm hydrogen peroxid pipett dilut cm gaug flask de ioniz water obtain hydrogen peroxid solut call pipett place erlenmey flask cm hydrogen peroxid solut cm approxim sulphur acid densiti solut permangan titrat permangan serv indic explan titrat reaction permangan hydrogen peroxid sulphur medium express gt pic file quot quot gt equival kmno pure hydrogen peroxid react permangan solut permangan satur volum volum hydrogen peroxid hydrogen peroxid dilut time begin cm test sampl repres cm origin hydrogen peroxid multipli number cubic centimetr permangan solut titrat titr origin hydrogen peroxid obtain prepar solut method litr dissolv sodium chlorid de ioniz water obtain total volum litr add quantiti hydrogen peroxid calcul mix make volum litr de ioniz water calcul volum hydrogen peroxid put solut quantiti pure hydrogen peroxid requir hydrogen peroxid gram litr volum requir express cubic centimetr gt pic file quot quot gt solut product requir nacl crystal analysi hcl pure concentr hcl de ioniz water prepar solut method solut dissolv sodium chlorid hcl de ioniz water mix make etch condit etch solut corros solut crystal possibl larg beaker water bath water bath stir magnet stirrer temperatur regul contact thermomet specimen suspend corros solut mean aluminium wire solut rest corner method prefer etch time hour temperatur fix care ensur quantiti reagent cm cm specimen surfac etch specimen wash water immers second dilut nitric acid wash water dri compress air number specimen etch time provid type alloi contact minimum quantiti reagent unit specimen surfac adher etch solut corros solut pour suitabl glass contain beaker test carri room temperatur imposs avoid variat room temperatur test prefer carri test water bath temperatur adjust mean thermostat etch time hour fix specimen corros solut accord etch specimen carefulli wash de ioniz water dri greasefre compress air care event ratio quantiti corros solut specimen surfac ml cm prepar specimen examin product requir cast dish dimens extern diamet mm height mm wall thick mm gt pic file quot quot gt method specimen vertic cast dish rest face pour mixtur araldit dcy harden hy proport set time hour amount materi remov face prefer lath section examin microscop show corros surfac distanc face thick remov lath mm figur section examin polish mechan alumina paper felt micrograph examin specimen examin consist note intens intercrystallin corros part perimet section examin account properti metal outer surfac cylind thick section examin low magnif order locat corrod area higher magnif order assess natur extent corros interpret micrograph examin consist verifi intergranular corros superfici alloi equiax crystal depth corros round entir perimet section exce higher valu grain direct perpendicular face examin mm permiss valu exceed local provid exceed field examin magnif alloi crystal set direct cold work depth corros face make intern extern surfac cylind exce mm appendix gt pic file quot quot gt appendix gt pic file quot quot gt test assess suscept stress corros method consist subject ring cut cylindr part cylind stress immers brine period remov brine exposur air longer period repetit cycl dai crack ring period dai alloi consid suitabl manufactur ga cylind take specimen ring width mm whichev greater cut cylindr part cylind figur specimen cut subject stress mean thread bolt nut figur outer surfac specimen machin surfac prepar corros test trace greas oil adhes stress gaug remov suitabl solvent perform test prepar corros solut brine prepar dissolv part mass sodium chlorid part mass water ph freshli prepar solut rang ph correct dilut hydrochlor acid dilut soda solut top ad salt solut ad distil water initi level vessel top carri daili solut complet replac week appli stress ring ring compress outer surfac stress ring open surfac stress amount stress maximum permiss stress wall thick calcul gt pic file quot quot gt actual stress measur electr stress gaug stress calcul formula gt pic file quot quot gt diamet ring compress open extern diamet cylind mm cylind wall thick mm gt pic file quot quot gt modulu elast mm mm correct factor figur essenti nut bolt electr insul ring protect corros solut ring complet immers salin solut minut remov solut expos air minut cycl repeat dai ring break whichev specimen inspect visual crack interpret result alloi consid accept manufactur ga cylind ring subject stress develop crack visibl nake ey visibl low magnif end test dai metallograph examin event doubt presenc crack line pit uncertainti remov mean addit metallograph examin section perpendicular axi ring suspect area comparison made form inter transcrystallin depth penetr corros face ring subject tensil compress stress alloi consid accept corros face ring similar hand face ring subject tensil stress reveal inter crystallin crack deeper corros affect face subject compress stress ring consid fail test report alloi standard number composit limit alloi actual analysi cast cylind manufactur mention actual mechan properti alloi report minimum mechan properti requir result test gt pic file quot quot gt annex iii gt pic file quot quot gt technic annex eec pattern approv certif result eec examin pattern view eec approv main featur pattern longitudin cross section type cylind receiv pattern approv show nomin extern diamet indic design toler laid manufactur minimum thick cylind wall minimum thick base head indic design toler laid manufactur minimum maximum length lmin lmax capac capac vmin vmax pressur ph manufactur draw date type cylind alloi accord section natur chemic composit method manufactur heat treatment guarante mechan characterist tensil strength yield point annex iv gt pic file quot quot gt gt pic file quot quot gt