In fact, scrap

From the first use, dissolved the coating. Meanwhile, the fire was about 6 to 7 times in operation. The coating has been completely replaced, the part is - although never come into contact with moisture - completely rusted and looks as if it had been for years outdoors. The only consolation is that the chimney works. through the diaphragm is also somewhat protected from the intense heat, but you should still use in any case, heat resistant gloves.