In Russia, China and some other countries, the water in the heating systems is harmful to the radiators, this is due to the center-heating systems and the hard management. The corrosion is serious if the radiators there are not so strong.

But not all the people like the cast iron radiators, they want to find other radiators which also could prevent the corrosion inside.

At the moment we have already two main solutions on this:  one is to use the materials like copper or stainless steel to make the radiators, because these materials itself could prevent the corrosion, another is to make a special inner coating inside the radiator to prevent the corrosion. Both solutions are successful and satisfied.

       In china we could find a bimetal radiators, that is also for the purpose of anti-corrosion.