Polyurethane Foam Insulation Pipe
PRODUCT PARAMETERS
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Product Indexes
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Reference Standard
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Standard Requirement
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Our product value
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Outer protection pipe
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Density (kg/m3 )
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CJ/T114-4.2.3.1
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≥940
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948.2
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Elongation at break (%)
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CJ/T114-4.2.3.4
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≥350
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618
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Tensile yield strength (MPa)
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CJ/T114-4.2.3.4
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≥19
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20.5
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Longitudinal shrinkage rate (%)
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CJ/T114-4.2.3.5
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≤3
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1.23
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Long term Mechanical properties
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CJ/T114-4.2.3.6
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>1500h(80℃,4.0 MPa)free from damage
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Pass
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The difference of the melt flow rate (g/10min)
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CJ/T114-4.2.3.2
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≤0.5
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0.11
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Carbon Black Content %
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CJ/T114-4.2.3.1
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2.5±0.5
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2.4
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Polyurethane insulation layer
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Density (kg/m³)
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CJ/T114-4.3.2
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≥60
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71.1
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Average pore size (mm)
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CJ/T114-4.3.1
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≤0.5
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qualified
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Percentage of close area(%)
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CJ/T114-4.3.1
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≥88
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94
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Compressive strength(MPa)
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CJ/T114-4.3.3
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≥0.3
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0.58
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Water absorption(%)
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CJ/T114-4.3.4
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Immersion in boiling water 90 minutes, bubble water absorption should be not more than 10%
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≤5.53
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Working steel pipe
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Seamless steel pipe(≤DN150)
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GB8163
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20#
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qualified
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Spiral steel pipe(≥DN200)
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GB/T9711 or SY/T5037
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Q235B
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qualified
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PRODUCT FEATURES
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Product name
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Thermal insulation direct buried pipe
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Length
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5.8m-12m, or by customer's requirements
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Nominal diameter
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DN25-1800
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Laid way
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Buried
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Application
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Fluid Pipe, Natural gas, Gas, Oil, Hydraulic, chemical, drill, etc.
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Production Standard
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The national standard GB/T29047-2012, CJ/T114-2000, CJ/T155-2001
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TECHNICAL INDICATORS
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Nominal diameter
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OD ×Thickness(mm)
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Outer protection tube diameter ×Wall thickness(mm)
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Insulation thickness(mm)
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25
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32x3
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90x2.3
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29
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32
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43x3
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110x2.5
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33
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40
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48x3
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110x2.5
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31
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50
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57x3
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125x2.5
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34
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65
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76x3.5
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140x3
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33
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80
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89x4
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160x3.0
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33
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100
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108x4
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200x3.2
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36
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125
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133x4.5
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225x3.5
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46
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150
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159x4.5
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250x3.9
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45.5
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200
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219x6
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315x4.9
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48
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250
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273x6
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365x5.6
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46
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300
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325x7
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420x7
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47.5
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350
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377x7
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500x7.8
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61.5
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400
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426x7
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550x8.8
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62
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450
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478x7
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600x9.8
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61
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500
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529x7
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655x9.8
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63
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600
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630x8
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760x11
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65
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700
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720x8
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850x12
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65
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800
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820x9
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960x13
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70
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900
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920x10
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1054x14
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67
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1000
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1020x12
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1155x14
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77
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1200
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1220x12
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1380x15
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80
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1400
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1420x14
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1680x16
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114
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