... 10m,15m,20m,25m,30m,50m3).Thermal Insulation Tube: Aeroflex EPDM insulation tubes4).Insulation Tube Wall Thickness: 13mm/20mm5).Flexible SS Corrugated ... W/mKASTM C 177 JIS A 1412 DIN 52613Corrosion of Copper ,Stainless Steel NoncorrosiveDIN1988Environment Friendly CFC ,HCFC free UV, Weather ... )AKSG01-20-2075*75*30CM3300M(165PCS)8280M(414PCS) Pre insulated Solar Water Heater Plumbing Hose