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StainlessSteelPetrochemicalindustrywithitsownproductionofsomeofthefeatures,suchasitsoperatingtemperaturerange,lowtemperatureconditionsupto196℃,temperaturescanreachmorethan500℃operatingpressurethereisexternalpressure,vacuum,atmosphericpressure,mediumpressure,highpressure,ultrahighpressuremorethan100MPaInaddition,theoperatingenvironmentinthemediumcomplexity,suchastheexistenceofcorrosion,wearandtear,andflammable,explosive,toxicandothersolid,gaseous,liquidandavarietyofmixedmediachloride,sulfideandothersaltcategory.Therefore,thepetrochemicalindustryintheuseofstainlesssteel,therequirementsofstainlesssteelhasstrongcorrosionresistance,includingantichloride,sulfideandothercorrosivesaltsresistanttohightemperatureandlowtemperatureperformance.Amongthem,thepetrochemicalplantat500600℃,theequipmentandpipematerialsingeneraltochooseavarietyofausteniticstainlesssteelbased,suchas304H,316,321,suchasausteniticstainlesssteelhasbeenwidelyusedandforoilexploration,thedevelopmentofthefieldofstainlesssteelwithanticalledcarbondioxide,hydrogensulfidecorrosionproperties.Atpresent,Chinascrudeoilexploration,developmentismainlyusedin3Cr,9Cr,13Cr,super13CrandcontainingmorethanCr22stainlesssteelthickwalled,nonmagneticdrillcollaranddrillpipe.Atpresent,Chinaspetrochemicalindustryinthestainlesssteelvarietyofchoice,ingeneralto304mainly,steelplatethicknessof6to22millimeters,themainpolymerusedintheconstructionofstoragetanks,heatexchangershell.Inaddition,somepiecesoftheuseofreactortower316L,TP347,etc.,thethicknessof26mm.GlacialaceticacidandliquiddeliveryvehiclestraintankerGeneraluseof304and306plate.Inaddition,productionofthedevicebecauseoftheexistenceofureacarbamateaminecondensate,ahighlycorrosive,generallystripper,separation,andtheuseof316Lstainlesssteelcondenser.Onthestainlesssteelcladplate,suchplatemainlyusedinoilrefiningequipmentreactiontower,commonlyusedfor20R0Cr13AL,16MnR0Cr13AL,20R0Cr13such.Duetothesubstrate,rehabilitationmaterialsandproductionmethods,equipmentlimitations,domesticcompositesteelplatethickness,lengthfarfrombeingabletofullymeetthedemandsofthepetrochemicalindustry.Inaddition,thedomesticstainlesssteelplatesplicing,heattreatment,testingandothermeansyettobeimproved.Asaresultofawiderangeofstainlesssteel,petrochemicalindustry,currentlyusedforthetypeofausteniticstainlesssteel,ofwhich304brandsofstainlesssteelplate,tubeforgingslargestamount,316,304L,316Loftheplate,tube,forgingalargeramount,ASTMstandardTP321,TP347,TP316brandsofboilertubes,heatexchangerisalsograduallyincreasingdosage.Inaddition,aspecialtwowaystainlesssteelasaresultofcorrosionresistance,ChiangKaishekinthepetrochemicalindustryhasbeenrapidpromotionanduse,ofwhichtwowaygraduallyincreasingtheamountofstainlesssteeltubes.Atpresent,Chinaspetrochemicalindustryintheuseofstainlesssteelisabout70,000tons,ofwhichstainlesssteelplate8mmormoretheamountofapproximately10,000tons,stainlesssteelcompositeplateisabout15,000tons,stainlesssteelseamlesssteeltubeisabout40,000tons,stainlesssteelpipeisabout5000tons.DomesticstainlesssteelinthepetrochemicalfieldofapplicationofthereasonsfornotwidespreadAtpresent,thedomesticstainlesssteelinthepetrochemicalfieldofapplicationisnotextensive,mainlyinthefollowingreasonsFirst,donotsupporttheissueofstandards.Chinaspetrochemicalindustryhasbeenformedtomeetthedevelopmentneedsofthestandardsystemathomeandabroadforhighpressure,highsulfur,carbondioxidehighthreehighnaturalgasproductionequipment,materialsmelting,manufacturing,testing,testingtechnologysubsidiarynormsandstandardsisstillincomplete.Second,productproblems.Inthisregard,mainlystainlesssteelplate,tube,forging,weldingmaterialisnotmatching.Third,theissuesize.Domesticmetallurgicalindustryneedsofthepetrochemicalindustryinthethickwideboard,largediameter,thickwalledsteelpipeproductioncapacityisverylimited.Fourth,qualityissues,productqualitystainlesssteeltubeinstability.Fifth,researchanddevelopmentproblems.NewvarietiesofthedomesticstainlesssteelRDandproductionisstillunabletomeetthepetrochemicalindustrysdevelopmentneeds.Inaddition,thestainlesssteelresearch,productionandexchangeofinformationbetweenusersoftheexistenceoftheproblempoor.Asaresultofthesefactors,theneedforstainlesssteelandpetrochemicalindustriestherearemanyvarietiesofdomesticenterprisescannotprovide,suchasfourmeterswideoftheheavyplateproductioninChinaisnotyet,therearemanyformsofstainlesssteelequipmentisimported.Inaddition,domesticenterprisesinproductdevelopmentwithforeignenterprisesisstilllaggingbehindcomparedto,forexample,somesteelcompaniesinEuropeeveryyeartolaunchadozennewvarietiesofstainlesssteel,andChineseenterprisesinthisrespect,theworkisnotenough.ThefivemajortrendsinthepetrochemicalproposednewrequirementsforstainlesssteelThefutureofChinaspetrochemicalindustrywillmovetowardsthetopfivetrendsinthedevelopmentofstainlesssteelproductsandhigherrequirements.Firstofall,thefutureofChinasoilandgasfieldexplorationanddevelopmenteffortswillfurtherincrease.Suchascarbondioxidewillbeinjectedbackundergroundwaystoreducecarbondioxideemissionsandimprovetheoilrecoveryrate.Atthesametime,Chinasnaturalgasexplorationanddevelopmenteffortswillbegreaterthanthecrudeoilexplorationanddevelopment,andtothehighsulfurcontent,carbondioxideareadevelopment16hydrogensulfidecontent,carbondioxidecontentofabout8,andwillfurtherdeepenthedepthofwells,landShamTsengwillexceedthe8000meters.Second,thepetrochemicalplantwillbelargescale.Ethyleneproductionofsingledevicewillexceedonemilliontonsrefiningsinglefactoryrefiningcapacitymorethan15milliontonsofpurifiedterephthalicacidPTAproductioncapacityofasingleplantmorethan800,000tonsstainlesssteeltankstothelargescaledevelopment.Thethirdisrunpetrochemicalplantwillbealongtermdevelopment,andgraduallyoverhaulthecurrentcycleofthetransitionto3years.Fourth,thepetrochemicalproductionwilldiversifythesourceofmaterialsdevelopment.Withtheimprovementoftherequirementsofenvironmentalprotectionandenergyconsumptionstructure,usingnaturalgasasrawmaterialsofchemicalindustryisdevelopingrapidly.Asaresultofnaturalgasatminus160℃canbeachievedundertheconditionsofliquefaction,sotheneedforstainlesssteelstorageandtransportationequipment.Inaddition,asChinasLNGimportsincreaseincoastalareasneedtoreceivelargescaleconstruction,workingcapitalandstoragefacilities,canbeexpectedinthisregardwillbeverylargestainlesssteelconsumption.Thesepetrochemicalindustrydevelopmenttrendofstainlesssteelproducts,specificationsandvarietieshaveputforwardnewdemands.Fromanticorrosionrequirements,thepetrochemicalindustryproductiondevicetemperature,pressure,mediaaremajorchangeshavetakenplace,stainlesssteelusedinamoreharshenvironment,anticorrosionperformancebyasinglechangetothecompositeperformance.Intheprocessingperformance,therequirementsofstainlesssteelahigherintensity,bettertoughness,weldabilityandgoodprocessability.Ingeometry,therequirementsofstainlesssteelproductsandhighprecision,widthincreased,largediametersteelpipe,steelpipewallthicknessincreased.Inthestandards,stainlesssteelproductionassoonaspossiblewithinternationalstandards.Inaddition,thepetrochemicalindustryasaresultofeachofwells,eachsetofconditionsofservicerefiningdevicethereisadifference,relatedstainlesssteelproductionenterprisesshouldbebasedontheactualsituationintheprovisionofpersonalizedservices.Inaddition,withtheincreasedusageofstainlesssteel,stainlesssteelusedineconomicsisevenmoreimportant.Therefore,thedomesticironandsteelenterprises,especiallythesteelpipeindustryshouldimprovethetechnologicalcontentofproductsandvalueadded,highendproductmarketoccupation.Atpresent,manyEuropeansteelisnolongertheproductionoflowvalueaddedoilwellpipes,andwillfocusentirelyonhighaddedtube,thepreparationforthesehighendproductsoccupiedtheChinesemarket.
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