1.spiral tubular heater 2.up to 1700 celsius 3.rod,u,w,h,gun,spiral,dumbbell,door shape 4.accurate resistance 5.ISO 9001 20 years manufacturer silicon carbide double spiral tubular heater1.The General Description of silicon carbide heating element1)production process:made into blank,silicided under high temperature and re-crystallized.2)character: high-applied temperature ,anti-oxidization ,anti- ...