| Pexb-anUV has two layers, the material of its internal layer is silicane crosslinked polyethylene, the white one ,green environment, has the capacity of heat-resistance for a long time and aging resistance with innocuity as well as corrosion resistance.And the external layer , black one,mix with polyethylene,carton black and oxidation inhibitor,has the excellent capacity of ultraviolet radiation resistance , Compared with current common metal pipes, it is more heat-preservation and energy-saving. Therefore, it will be a new type of pipe with benefit to environmental protection. Technical Indexes: Specification: Outside Diameter(mm) | SDR | 11 | 9 | 7.3 | PEX Series | 5 | 4 | 3.15 | Wall thickness (mm) | Weight(kg/m) | Wall thickness(mm) | Weight (kg/m) | Wall thickness(mm) | Weight(kg/m) | 12 | 1.3 | 0.045 | 1.4 | 0.049 | 1.7 | 0.059 | 16 | 1.5 | 0.083 | 2.0 | 0.083 | 2.2 | 0.098 | 20 | 2.0 | 0.111 | 2.3 | 0.131 | 2.8 | 0.153 | 25 | 2.3 | 0.169 | 2.8 | 0.197 | 3.5 | 0.238 | 32 | 2.9 | 0.268 | 3.6 | 0.323 | 4.4 | 0.382 | 40 | 3.7 | 0.425 | 4.5 | 0.503 | 5.5 | 0.594 | 50 | 4.6 | 0.659 | 5.6 | 0.78 | 6.9 | 0.926 | 63 | 5.8 | 1.04 | 7.1 | 1.24 | 8.7 | 1.46 |
Performance Index: Test Item | Technology Requirement | Crosslinking Degree(%) | ≥65 | LongitudinalReversion (%) | ≤3 | Hydraulic Test | 20℃,12.0Mpa of hoop stress,1h,no seepage,no broken | 95℃,4.8Mpa of hoop stress,1h, no seepage,no broken | 95℃,4.7Mpa of hoop stress,22h, no seepage,no broken | 95℃,4.6Mpa of hoop stress,165h, no seepage,no broken | 95℃,4.4Mpa of hoop stress,1000h, no seepage,no broken | Density (g/cm3) | ≥0.94 | Tensile-strength (N/mm2) | 20℃ 19~26 100℃ 9~13 | elongation at break(%) | 20℃ 350~550 100℃ 500~700 | Temperature(℃) | -70~+95 | Linear Expansibitlity (m/m°k) | 20℃ 1.4×10-4 100℃ 2.05×10-4 | Vicat Softening Point(℃) | 133 | Coeffient of Heat Conductivity (W/m°k) | 0.35 |
Anti-UV Layer: The carbon black content should be no less than 2.5% in conformity with the national concerned stipulations. Sanitation: The inner tube should meet the requirements of GB/T17219 criterion. Advantages of the product Anti-ultraviolet, green environment Firm connection, safe without leakage Age resistance, anticorrosive, long service life Service Range Pipeline Network of Solar Energy Installations
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