Polyurethane direct buried insulation pipe manufacturing industry has developed rapidly in China
Release time:
2018-12-07
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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%.
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