... for oven and barbecue ,fan heaters and other heaters with high tempreture quality certification TUV,UL lower price Quatz tube ... Cr20Ni80) as the heating body, high-quality quartz glass tube as an insulator and thermal conductor, ... high temperature with no deformation, non-pollution, anti-corrosion, small thermal inertia , high thermal conversion efficiency . High quality infrared quartz heating pipe ...