... : OD10-50mm; Power: 0.3-6KW. Infrared Quartz Heating Tube Type: Infrared Heating Resistance Wire: 1) alloy wire,255,8020,277 ... wire Envelope: high purity quartz glass tube connection: wire, pin and etcInfrared quartz heating tube with alloy wire component voltage is ... heater the component have no coating, and milky white quartz tube playing a radiation role promptly, also supporting and insulate ...