The polyethylene outer protective layer is formed by circumferential winding, and due to the influence of the process, its mechanical properties such as circumferential elongation and tensile strength have significantly improved.
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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