TubeWeld [India] Limited manufactures Stainless Steel Super Heater Coils. TubeWeld [India] Limited supplies various types of industrial boiler plants. The Stainless Steel Super Heater Coils are used in a boiler to generate saturated steam. The super heater coils are specially used in Boilers of Power plant. The Super Heater Coils are also available in various grades of Alloy steel – T1, T9, T11, T22, T9 & T91 and in stain less steel tubes SS 304, SS310, SS316 and SS 347H with or without support and header.