... pipe system Consisting of 100% Genuine EPDM insulation, 2 x flexible corrugated stainless steel tubes (feed and return), UV-resistant Jacketing ... ,2 xSilicone-sensor line.Corrugated stainless steel tube: Flexible high-grade stainless steel tube 316L(or 304) for ... temperature range from from -200°C to +200°C,flexible copper 0.75 0.75mm2 , Rated voltage 300/500v ,electric resisteace 23 ...