Doppelwandrohr

Double Wall tube consists of an outer semi-conductinglayer (black) and an inner insulating layer (red). Both layers areco-extruded for perfect bonding and performance. One tubeserves as both insulation and screen, replacing two separatetubes that were used in older systems. The tubings are suitablefor applications up to 36kV and the maximum delivery lengthis 1000mm. SPECIFICATIONSNO.PropertyTest MethodTypical ValueOuter semi-conducting layer1Specific GravityASTM D792 1.01.02Tensile StrengthASTM D41212 N/mm23ElongationASTM D412300%4Water absorptionASTM D570< 0.5%Inner insulating layer1Specific GravityASTM D792 1.01.02Tensile StrengthASTM D41215 N/mm23Elongation 　　　　　　　　　　　ASTM D412350%4Water absorptionASTM D570< 0.5%5Volume ResistivityASTM D2571 x 1014 Ω - cmFinished product1Heat Shock @ 200°CASTM D2671Passes2Low Temp. Flexibility @ -20°CASTM D2671Passes3Longitudinal ChangeASTM D2671Inside 10%4Wall thickness ratioASTM D2671> 0.6RANGE & DIMENSIONSNO.SIZESI.DAs supplied(mm)I.DAfter recovery(mm)Wall ThicknessAfter recovery(mm)1DW 35/1235126.02DW 45/1545156.003DW 55/1855186.004DW 65/2565256.505DW 85/3085306.506DW 100/38100386.507DW 120/45120457.008DW 140/50140507.00