Power-Saving type Sealed Double-Pipe ONDOL

 * The World’s First Double-Pipe Insulation. This is a complex PPB exterior pipe. Unlike metal pipes, it is a permanent product that Prevents corrosion and an electric leakage even contact with cement or water. (Product Life Cycle = Building Life Cycle)  * Heat Transfer Speed. Inside pipe is filled with 95 percent pure magnesia before compression,heat transfer speed is three times faster than water.  * Maximization of heat efficiency  As it is designed to seal the space between a complex PPB exterior pipe and an inner pipe (Stainless steel pipes & steel pipes),it excels in secondary heat diffusion speed and heat storage. * Non-Electromagnetic Wave  It is Korea's only non-electromagnetic wave sheath heater based on electromagnetic wave-offsetting design (spring-type/double-track design), a unique patented technology developed by HANJIN TECH.    As a double track is applied to a heating element,the product excels in heat efficiency. It is a power-saving sheath heater electric ONDOL that can implement heating with 400W/hr. per 3.3