High-density polyethylene black jacket polyurethane rigid foam prefabricated direct-buried thermal i

Product Details

"High Density Polyethylene Black Jacket Polyurethane Rigid Foam Prefabricated Direct Buried Thermal Insulation Pipe" Parameter Description

Authentication:	GB/t29047-2012	Pattern:	Solid
Connection method:	Flange connection	Cross Section Shape:	Circle
Diameter:	DN201-DN300	Type:	Water
Model:	Dn377*7	Specifications:	GB
Trademark:	Xinjinlong	Packaging:	National Test Report Steel Pipe Material List
tensile yield strength mpa:	≧0.3 GB/t8813	Long-term mechanical properties h:	>1500(80℃/4mpa)
The environmental stress cracking h:	140 en253	Vertical Shrink %:	≦3
Compressive strength mpa:	≧0.3 GB/t8813	Density kg/m3:	≧940 GB/t6343
Heat resistance ℃:	140 en253	Elongation at break %:	<0.033 GB/t10297
Dn200-300:	Dn200dn219dn273dn300	Polyurethane insulation layer density kg/m3:	≧60 GB/t6343
Yield:	585274

Detailed introduction of "High Density Polyethylene Black Jacket Polyurethane Rigid Foam Prefabricated Direct Buried Insulation Pipe"

Prefabricated Buried Polyurethane Insulation Pipe (Table 1)  
Item Unit Index Test method, standard
Density kg/m3 ≧940 GB/T6343
Tensile yield strength Mpa ≧0.3 GB/T8813  
Elongation at break ％ <0.033 GB/T10297  
The environmental stress cracking h 140 EN253
Longitudinal shrinkage ％ ≦3  
Long-term mechanical properties h >1500(80℃/4Mpa)
Carbon Black Content % 2.5±0.5
Carbon Black Dispersion nm ≦100  
Melt flow rate g/10min difference≦0.5
Main technical indicators of polyurethane insulation layer (Table 2)  
Item Unit Index Test method, standard
Density kg/m3 ≧60 GB/T6343
Compressive strength Mpa ≧0.3 GB/T8813
Thermal conductivity W/m.k <0.033 GB/T10297
Heat resistance ℃ 140 EN253
Cold resistance ℃ ≧－50  
Closed cell rate ％ ≧88 GB/T10799  
Water absorption ㎏/㎡ ≦10 GB/T114