Pre Insulated Pipe

Thermal insulation direct buried pipe can also be called pre insulated pipe, they are a kind of heat pipeline. We can supply high quality Heating Pipeline, welcome to choose us! Product Indexes Reference Standard Standard Requirement Our product value Outer protection pipe Density (kg/m3 ) CJ/T114-4.2.3.1 ≥940 948.2 Elongation at break (%) CJ/T114-4.2.3.4 ≥350 618 Tensile yield strength (MPa) CJ/T114-4.2.3.4 ≥19 20.5 Longitudinal shrinkage rate (%) CJ/T114-4.2.3.5 ≤3 1.23 Long term Mechanical properties CJ/T114-4.2.3.6 >1500h(80℃,4.0 MPa)free from damage Pass The difference of the melt flow rate (g/10min) CJ/T114-4.2.3.2 ≤0.5 0.11 Carbon Black Content % CJ/T114-4.2.3.1 2.5±0.5 2.4 Polyurethane insulation layer Density (kg/m3) CJ/T114-4.3.2 ≥60 71.1 Average pore size (mm) CJ/T114-4.3.1 ≤0.5 qualified Percentage of close area(%) CJ/T114-4.3.1 ≥88 94 Compressive strength(MPa) CJ/T114-4.3.3 ≥0.3 0.58 Water absorption(%) CJ/T114-4.3.4 Immersion in boiling water 90 minutes, bubble water absorption should be not more than 10% ≤5.53 Working steel pipe Seamless steel pipe(≤DN150) GB8163 20# qualified Spiral steel pipe(≥DN200) GB/T9711 or SY/T5037 Q235B qualified PRODUCT FEATURES Product name Thermal insulation direct buried pipe Length 5.8m-12m, or by customer's requirements Nominal diameter DN25-1800 Laid way Buried Application Fluid Pipe, Natural gas, Gas, Oil, Hydraulic, chemical, drill, etc. Production Standard The national standard GB/T*-2012, CJ/T114-2000, CJ/T155-2001

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