Water pressure tanks with carbon steel flange

Carbon steel

— steel with a high carbon content, supplemented with a special coating, is the most popular material for flanges today. The main advantages of this material are ease of production and low cost. On the other hand, such steel is not particularly resistant to corrosion. The mentioned coating (most often zinc) somewhat improves the situation. However, this type of flange is still not particularly durable: their guaranteed service life is on average 4 to 6 years, after which the part will have to be changed. For the same reason, carbon steel is not recommended for drinking water systems. However, many consider this material to be optimal in terms of price and durability/quality.