Due to spray forming, the surface of the polyurethane foam is rougher, resulting in stronger adhesion performance with the outer protective polyethylene sheet.
Categories:Spray-wound insulation pipe
Implementation standards |
| Innerpipematerial | ubmergedarcweldedspiralsteelpipe,seamlesssteelpipe,etc. |
| Designpressure | P≤1.6MPa |
| Conveyingmedium | Hotwater,coldwater,etc. |
| Designtemperature | T≤140℃ |
| Implementationstandard | GB/T34611-2017 |
| Polyurethanedensity | ≥60kg/m3 |
| Servicelife | Greater than or equal to 30 years |
| Outerprotectivepipedensity | ≥940kg/m3and≤960kg/m3 |
Product diagram |
Product advantages |
(1)Thepolyurethanesprayingprocessresultsinbetteruniformityofthepolyurethaneinsulationlayerdensity,betterstabilityofthethermalconductivitycoefficient,higherclosed-cellrate,lowerwaterabsorption,andsmalleraxialeccentricityoftheinsulationpipe;
(2)Thepolyurethaneinsulationlayerisformedbyfreefoaming,withthedirectionofbubbleinitiationperpendiculartotheaxialdirectionofthepipe,improvingthecompressivestrengthoftheinsulationlayer.
(3)Thebondingperformancebetweenthepolyurethaneinsulationlayerandtheworkingsteelpipeisstronger.(Thepolyurethanerawmaterialissprayedinliquidformontothesurfaceofthesteelpipe,thenreactsandforms.Duetothehighreactivityofthesprayedpolyurethanerawmaterial,itsbondingforceissuperiortotraditionalprocesses.)
(4)Duetothespraymolding,thesurfaceroughnessofthepolyurethanefoamishigher,andthebondingperformancewiththeouterprotectivepolyethylenesheetisstronger.
(5)Thepolyethyleneouterprotectivelayer,whileensuringitsperformance,isthinnerandmoreuniform,whichcansavecosts.
(6)Thepolyethyleneouterprotectivelayerisformedbycircumferentialwinding.Affectedbyprocessstretching,itsmechanicalperformanceindicatorssuchascircumferentialelongationandtensilestrengtharesignificantlyimproved.
Product specifications |
| Worktubeengineeringdiameter （DN）mm |
Insulationthickness mm |
Outerprotectivelayerouterdiameter （Dc）mm |
Minimum wall thickness of outer protective layer. （emin）mm |
| 300 | 30~50 | 393~433 | 4.0 |
| 350 | 30~50 | 445~485 | 4.0 |
| 400 | 30~60 | 494~554 | 4.0 |
| 450 | 30~60 | 547~607 | 4.5 |
| 500 | 30~60 | 598~658 | 4.5 |
| 600 | 30~60 | 700~760 | 5.0 |
| 700 | 30~60 | 790~850 | 5.0 |
| 800 | 30~60 | 891~951 | 5.5 |
| 900 | 30~60 | 992~1052 | 6.0 |
| 1000 | 30~60 | 1093~1153 | 6.5 |
| 1100 | 30~60 | 1194~1254 | 7.0 |
| 1200 | 40~100 | 1316~1436 | 8.0 |
| 1400 | 50~120 | 1538~1678 | 9.0 |
| 1600 | 60~140 | 1760~1920 | 10.0 |
| Note:Otherouterdiametersoftheouterprotectivelayercanbeselectedaccordingtodesignrequirements, buttheminimumwallthicknessoftheouterprotectivelayerforsteelpipesofthesamediametershouldbethesame. |
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●Customproductioncanbecarriedoutaccordingtouserrequirements;optionalanti-leakageearlywarningsystemcanautomaticallydetectpipelinenetworkleakagefaults,automaticallyalarm,andhashighsafetystability.
●Thedesignandcalculationofproductspecificationsneedtoconsiderspecificapplicationconditions,involvingmoreparameters.PleasecontactYuanfengCompany.
Productaliases:Sprayinsulationpipe,spraywindinginsulationpipe,polyurethanesprayinsulationpipe,polyurethanespraypolyethylenewindinginsulationpipe,polyethylenewindinginsulationpipe,spraywindingpolyurethaneinsulationpipe,rigidpolyurethanespraypolyethylenewindingprefabricateddirect-buriedinsulationpipe,etc.
Shipment pictures |
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