If you are in charge of maintenance at an older factory, you may be responsible for the upkeep of the cast iron water pipes used to cool the equipment. Because of the iron's tendency to rust, you may worry that they may be deteriorating. If so, look for the following four signs that your factory's old cast iron water pipes are corroding and need replacing.
Corrosion around Brass Fittings
Although the pipes may be old and made from cast iron, the fittings connected to them are often made from brass.