... 1.Light, flexible, closed cell, synthetic caoutchouc;2.Free of PVC, CFC. Material class: ... ;4.Dimensions according to DIN 52 275-2.5.Long term temperature stability up to ... 2”),DN16(R3/4”),DN20(R1”)2.Lengths: 10m,15m,20m,25m,30m,50m Product Characteristics:1.Pre-insulated solar pipeline systems2.Quick ... UV resistant black film protection6..Can be connected with all standard components .for solar thermal ...