According to German standard size for BOLTS G3/4,G1,G5/4. It is customary to have a 22mm,26mm or 33mm diameter magnesium anode in the tank with a volume range of 100-200 liters, hundreds of liters or more. A magnesium anode with a diameter of 21.3mm or 25.4mm is also commonly used in non-metric systems. Of course, a 14mm,16mm or 18mm diameter magnesium anode is usually provided for small volume tanks. Cast magnesium anodes can be up to 1.5 meters long, and extruded magnesium anodes can be up to 6 meters long.

In particular, the cast magnesium anode can be flexibly installed with screws cast in, either directly on the tank or in an insulated installation, which can be used to test the use of the magnesium anode from an ammeter connected externally to the tank.

The cathodic corrosion of enamel liner also depends on water quality. For example, the water has a strong conduction-the conductivity is equivalent to resistance-the more easily the current can be transferred, the greater the mass loss rate at the magnesium anode. Conversely, with low conductivity, the service life of magnesium anode can be as long as several years, but people's awareness of cathodic corrosion protection is far from enough. In particular, tank problems due to corrosion. Here will also tell you how to calculate the magnesium anode life, and let you know how the magnesium anode life is estimated.

Magnesium anode may have different geometric shapes (the ratio of length and diameter) and different surface area, all these data should be considered, because the ratio of surface area of the magnesium anode surface area/bladder to basic protection current ratio affect the result of cathodic protection, however, magnesium anode surface area determine the service life of magnesium anode and cathodic protection of continuity.