Stainless Steel 45 Degree Elbow

Chimney liner elbows are made of acid-resistant chrome-nickel steel plates in grade 1.4404 according to DIN 17441 with a thickness of 0.5mm to 0.8mm 
They are mainly used for flue heating equipment. 
Such chimneys are resistant to the corrosive effects of acidic condensate formed during the combustion process.