The application and development status of polyurethane foam in various industries
Five Ways to Change the Development Mode of China's Polyurethane Prefabricated Insulation Pipe Manufacturers Industry
Thepolyurethaneprefabricatedinsulationpipemanufacturerindustryisanimportantlivelihoodindustrywithsufficientmarketcompetitionandcloselyrelatedtopeople'slives.Ithasthecharacteristicsofsmallproducts,bigmarketandbigindustry.Inrecentyears,thepolyurethaneprefabricatedinsulationpipemanufacturerindustryhasachievedrapidandrapiddevelopment.Ithasbecometheproductionandprocessingcenter,procurementcenterandimportantinternationaltradedistributioncenterandsupplyplaceoftheworld'spolyurethaneprefabricatedinsulationpipemanufacturerandtheglobalpolyurethaneprefabricatedinsulationpipemanufacturer.However,asfarasthewholeindustryisconcerned,theimbalanceofdevelopmentisstillaprominentcontradictionintheindustry.Thereareproblemssuchasextensivedevelopmentmode,backwardequipmentandtechnology,excessofmediumandlow-endproducts,andinsufficienthigh-endproducts.Theindustryconcentrationislow,andthesmall,multi,scatteredandweakindustrystructureisstillthefocusofadjustmentinthefuture.Thetaskoftransformingthedevelopmentmodeofpolyurethaneprefabricatedinsulationpipemanufacturersisarduous.Tosumup,itisnecessarytoachievefivemajorchanges.1.Fromextensivetointensive.Changetheoriginalindustrysmall,multi,weak,scatteredstatus,improveproductprocessingcapabilities,enhancemanufacturingequipment,technology,createbrands,andtakeanintensivedevelopmentpath.Thecoreofextensivetransformationtointensivetransformationistoimproveproductprocessingcapabilityandqualitylevel,andtotaketheroadofindependentinnovationandindependentbranddevelopment.2.Fromlabor-intensivetotechnology-intensive. Labor-intensiveindustriescanalsointroducetechnologiessuchasmodernelectronicinformationintotheindustry.Therearemanyvarietiesofhardwareindustry,eachwithitsowncharacteristics,takingtechnology-intensiveroads,increasingproducttechnicalcontent,addedvalue,anddeepdevelopmentinthehigh-endmarket. 3.Theexpansionofthesimplefreightelevatorfromthequantitytothequalitativeimprovement.Atpresent,thestatusquoofproducthomogenizationandlow-levelrepetitivelaborintheindustryhasnotbeenimproved.Torealizethetransitionfromalargeproducingcountrytoastrongproducingcountry,itisnecessarytoovercomethecurrentsituationofexcessivelow-endproductsandinsufficienthigh-endproducts.4.Changefromlowcostandlowpricetohighaddedvalueandhighprofitrate.Thelow-pricecompetitionbetweenpeersisanactthatharmstheindustryandlosesbothsides.Inordertocompeteintechnology,theindustryshouldstartwiththeconnotationandaddedvalueoftheproductitselftogainthefavorofthemarket,soastomaintainanorderlyandhealthyecologicalenvironment.5.ExportswillfocusonOEMsandgraduallyincreasetheproportionofindependentbrands.Itisnecessarytofurtherstrengthentheunloadingplatformtoconsolidateandexpandtheinternationalmarket,increasethedevelopmentofthedomesticmarket,walkontwolegs,andpayequalattentiontobothdomesticandforeignmarkets.OEMproductionismainlythree-pointandone-lineorders,processinganddelivery,lackingmarketleadingpowerandbargainingpower.Therefore,itisnecessarytoestablishindependentbrands,graduallyincreasetheproportionofindependentbrandexports,andenhanceinternationalcompetitiveness.
Polyurethane direct buried insulation pipe manufacturing industry has developed rapidly in China
ThedirectburialofpolyurethanedirectburiedthermalinsulationpipesinrecenttenyearshasbeenrapidlydevelopedinChina,andhasbecomethemainlayingmethodofheatingpipenetwork.Thedirectburialoftheso-calledpolyurethanedirectburiedinsulationpipeistodirectlyburythepolyurethanedirectburiedinsulationpipeinthesoilwithouttheneedtolaypipesintheconstructiontrench.Comparedwithtrenchlaying,directburiedpolyurethaneinsulationpipehasthefollowingadvantages:1.Thereisnoneedtobuildtrenches,theamountofearthworkandcivilengineeringissmall;thepipelineisprefabricated,theamountofon-siteinstallationissmall,andtheconstructionprogressisfast,sotheinvestmentcostoftheheatingpipenetworkcanbesaved.2,smallfootprint,easytocoordinatewithotherundergroundpipelinesandfacilities.Thisadvantageismoreobviouswhentheoldcityarea,thestreetsarenarrow,andtheundergroundpipelinesaredenselypacked.3,polyurethanedirectburiedinsulationpipeistight,waterisdifficulttoinfiltratebetweentheinsulationmaterialandthesteelpipe,thepipeisnoteasytocorrode.Accordingtoforeignmaterials,itisbelievedthattheservicelifecanbeguaranteedformorethan50years,whichismuchhigherthanthatofthetrench.4.Asathermalinsulationmaterial,polyurethanehasasmallthermalconductivity,andtheheatlossoftheheatingpipeislessthanthatofthetrench,andtheheattransferefficiencyishigh.5,polyurethanedirectburiedinsulationpipestructureissimple,factoryprefabrication,easytoensurethequalityoftheproject.ItispreciselybecauseoftheabovevariousreasonsthatthepolyurethanedirectburiedinsulationpipemanufacturingindustryhasdevelopedrapidlyinChina,andtherewillbemoreroomfordevelopmentinthefuture.Duringthe"TwelfthFive-YearPlan"period,theannualdemandcompoundgrowthrateofdirectlyburiedthermalinsulationpipesisexpectedtoexceed60%.ThedemandforChina'sexternalwallinsulationmarketwilleruptinthenextthreeyearsorwillraisetheglobalMDIindustryoperatingrateto83%.Thedirectburiedinsulationpipematerialexcelsinheatinsulation,waterabsorptionresistance,tensilestrengthandcompressionresistance.Weexpectthattheproportionofdirectburiedinsulationpipeininsulationmaterialswillincreasefrom10%in2011to36%in2015.Theannualcompoundgrowthrateisexpectedtoexceed60%. Theexternalwallinsulationmarketfrom2011to2015isexpectedtobringabout500,000tonsofnewdemandforMDI(thedemandfor2011-2015is3,5,8,13,210,000tonsrespectively) TheoutbreakofdemandforChina'sexternalwallinsulationmarketwillacceleratetheglobalMDIindustry'soperatingrateinthenextthreeyears.Itisexpectedthattheglobalindustryoperatingratewillincreasefromthecurrent74%to83%by2015,andtheindustry'supwardtrendwillbestrengthened.Webelievethattheexternalwallinsulationindustrywillusherinanexcellentdevelopmentopportunity.Thedirectburiedinsulationpipeisexpectedtoresumeexplosivegrowth,andtheannualdemandcompoundgrowthratewillexceed60%.
Polyurethane foam insulation spiral steel pipe manufacturers shape industry quality and open the market with quality
HebeiLongduPipelinelearnedthatpolyurethanefoaminsulationspiralsteelpipemanufacturersshapethequalityoftheindustrytoopenthemarketwithquality PrefabricateddirectburiedinsulationpipeismoreconvenientandsafetoapplyWhatcanbedonetobetterplaytheroleofprefabricateddirectburiedinsulationpipe?Ofcourse,itiseasytouseandsafe.Today,Xiaobianwillcometotellyouaboutit.Inadditiontothehigh-temperatureprefabricateddirect-buriedinsulationpipesproducedoutsideChina,thereareleakalarmlines.Oncethepipelineleakssomewhere,thetransmissionofthealarmlinecanshowtheaccurateleakageofwaterandwaterleakageonthespecialinspectioninstruments.Thelocationandthedegreeofleakage,inordertoinformtheinspectingpersonneltoquicklydealwiththeleakingpipesectiontoensurethesafeoperationoftheheatingpipenetwork.Thedomesticallyproducedinsulationpipeiscurrentlyequippedwithaleakagealarmline,andtheprefabricateddirectburiedinsulationpipeneedstobefilledwiththisblank.Thehigh-temperatureprefabricateddirect-buriedinsulationpipenotonlyhastheadvancedtechnologyandpracticalperformancethatisdifficulttocomparewiththetraditionaltrenchandoverheadlayingpipeline.Thehigh-temperatureprefabricateddirect-buriedthermalinsulationpipeiscomposedofsteelpipe,FRPinnersheathandglassfiberreinforcedplasticshell,andischaracterizedby:hightemperatureresistanceInsulationinsulationlayer,leakagealarmline:Whenmanufacturinghightemperatureprefabricateddirectburiedinsulationpipe,intheinsulationlayerclosetothesteelpipe,theprefabricateddirectburiedinsulationpipeisburiedwithanalarmline.Oncethepipeleakssomewhere,thetransmissionthroughthealarmline,Itcanalarmonthespecialdetectioninstrumentanddisplaytheexactpositionofthewaterleakageandthedegreeofleakage,soastoinformthemaintenancepersonneltoquicklyhandletheleakingpipesectionandensurethesafeoperationoftheheatingnetwork.Lubricatinglayer,elasticseal.Theutilitymodeleffectivelysolvestheproblemofheatpreservation,slidinglubricationandwaterproofingoftheexposedpipeendoftheprefabricateddirectburiedthermalinsulationpipeforthehightemperatureheattransferof130°C-600°Cinurbancentralheating.Prefabricateddirectburiedinsulationpipealsohassignificantsocialandeconomicbenefits,andisalsoapowerfulmeasureforheatingenergy.TheadoptionofdirectburiedheatingpipelinetechnologyindicatesthatthedevelopmentofChina'sheatingpipelinetechnologyhasenteredanewstartingpoint.Withthefurtherimprovementanddevelopmentofthisadvancedtechnology,itisimperativetodirectlyreplacethetrenchandoverheadoftheheatingpipeline.Withtheexpansionoftheapplicationrangeofprefabricateddirectburiedinsulationpipes,peoplehavebeguntopayattentiontohowtouseitmoresafelyandconveniently.Now,ifyourememberthesmallseries,youcanusetheprefabricateddirectburiedinsulationpipe. Pre-madedirectburiedinsulationpiperepairingsiteconstructionproblemanswerIntheconstructionprocessofprefabricateddirectburiedinsulationpipe,themostdifficultanddifficultproblemistheconstructionofprefabricateddirectburiedinsulationpipe.However,manyconstructionworkersarenotsurehowtodealwithunexpectedproblems.Today,RongbangxiaoEditedtoanswertheon-sitetreatmentmeasuresforsomeproblemsthatoftenoccurattheconstructionsite. 1.Whatarethemethodsforon-sitefillingofdirect-buriedplasticsleevesteelprefabricatedinsulationpipe?Themainfunctionofthemouthistotightlyconnectthegaptothemothertubetoachievethepurposeofsealingandwaterproofing.Thefollowingtwomethodsarerecommended:1diameterlessthan500mm,sleevesleevefillingmethod,whichiseasytooperateandlowincost;2diametergreaterthan500mm,usingelectricheatingsleevetofillthemouth,althoughthecostishigher,buttheprojectThequalityismoreguaranteed. 2.Howtocarryouton-siteoperationwithsleeves?Sleevesleevesareusuallydeterminedbasedonthetypeoftheparenttubeandthelengthofthemouth.Generallyspeaking,thediameterofthesleevetubeislargerthanthatofthemothertube,andthelengthisabout20-30cmlongerthanthelengthofthemouth.Forexample:thelengthofthe180mmdiameterinsulationtubeis30cm,andthesleevetubeisusually190mmindiameterand50-60cminlength.Specificoperationsteps:1Beforethesteelpipeiswelded,putthesleevesleeveintothetube.Afterthesteeltubeiswelded,slidethesleevetubetothemouth.Thebalanceatbothendsisaboutthesame.Bothendsaresealedwithheatshrinkabletape.2Openatoneendofthesleevetube.A30mmdiameterinjectionholeandthesameendofthesamesizeventhole,thepolyurethanematerialisevenlypouredorinjectedwithacastingmachine,afterthefoamingiscompleted,itcanbesealedwithaspecialplug. 3.Howtousetheelectricheatingsleevetorepairthemouth?Firstselecttheappropriateelectricheatingjacket(usually200-500mmcircumferenceislargerthantheouterprotectivetube),anduseaspecialelectrichot-meltweldingmachinetoheatthesurroundingpresetheatingwire,usuallyfor20-40minutes(determinetheheataccordingtothematerial)Aroundthemeltingtime),thehot-meltsleeveisbondedtothemothertube,andthenthesecondstepofthesleevesleevefillingmethodisusedforinjection,andthespecialblockagecanbeusedforsealing. 4.Straight-buriedplasticsleevesteelprefabricatedinsulationpipejointmaterial,isitfeasibletouseglassfiberclothandglassfiberreinforcedplasticpaint?No.Becauseglas
