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The GAMRAT polythene pipes for water supply and sewage transportation are made of: » PE 80 class material for pressures of 0,5; 0,63; 0,8; 1,0; 1,25 MPa (PN 5; PN 6,3; PN 8; PN 10 and PN 12,5), » PE 100 class material for pressures of 0,6; 1,0 and 1,6 MPa (PN 6; PN 10 and PN 16).
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Temperature of transported medium oC
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Reduction coefficient
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20 30 40
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1 0,87 0,74
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| Density of the material |
0,930 - 0,960 g/cm3 |
| Melt flow index |
0,2 - 1,4 g/10 min |
| Ultimate elongation at rupture |
not less than 350% |
| Thermal stability |
not less than 20 min at 200oC |
| Linear thermal expansion |
0,2 mm/m oC |
| Elasticity coefficient |
600 - 800 N/mm2 |
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Temperature
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Size range SDR (-)
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11
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13,6
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17
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21
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26
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>20oC
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20xD
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20xD
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20xD
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25xD
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30xD
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>10oC
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35xD
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35xD
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35xD
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45xD
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55xD
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>0oC
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50xD
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50xD
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50xD
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60xD
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70xD
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The pipes are manufactured in blue or black. In case of black pipes it is possible to plot four or six colour stripes.
Pipes made of PE-100 can work at higher pressure than pipes made of PE-80 although wall thickness is the same in both types. The effective internal area of a PE-100 pipe is about 17% bigger than that of a PE-80 pipe at the same nominal pressure.
Production range and technical parameters of pipes of PE class 80 and 100 (Series SDR 11; SDR 13,6; SDR 17; SDR 21; SDR 26)
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