Magnesium galvanic anodes are commonly used for cathodic protection of underground constructions (tanks, pipelines) and for protection of internal surfaces of tanks containing water (eg. water heaters, hot and cold water tanks, condensers, heat exchangers). Magnesium anodes have a very electronegative potential. For this reason, they are not used in sea water, because in an environment with such a low resistivity, they could excessively polarize the protected structure, which in turn could lead to hydrogen evolution and delamination of the protective coating. Due to the high self-corrosion of magnesium, galvanic anodes have an efficiency of only about 50%. This is an additional factor limiting their use in salt water, because the rate of dissolution of anodes working in this environment would be very high.
Magnesium anodes are made of alloys containing alloy additives, the purpose of which is to improve efficiency and actual current efficiency. The most widespread is the use of alloys of the MgAl6Zn3Mn grade, in which the main alloy additions are aluminum (ca. 6%), zinc (ca. 3%) and manganese (up to 1%).
Actual current efficiency of magnesium anodes is about 1100-1200 Ah/kg, which amounts to consumption of anode material in the amount of up to 8 kg/(A ∙ year).
Anodes for the protection of drinking water heaters and hot-water storage tanks form the core of our production. The anodes are produced in the following diameters and lenghts:
|DIAMETER Ø [mm]||16||18||21,3||22||25||26||30||32||33||38||40|
|LENGTH FROM ÷ TO [mm]||40÷650||40÷550||40÷1050||40÷950||40÷400||40÷1400||40÷500||40÷850||40÷1500||40÷630||40÷500|
Their active weight is from 0.05 to 2,3 kg.
We do not carry on trade retail of the anodes.
The basic series of types are:
TYPE A – MAGNESIUM ANODE WITH A FREE-STANDING WIRE (FOR WELDING)
TYPE B – MAGNESIUM ANODE WITH A THREADED BOLT
TYPE B1 – MAGNESIUM ANODE WITH A THREADED BOLT
TYPE C – MAGNESIUM ANODE WITH A THREADED BOLT AND STEEL PLATE
TYPE D – MAGNESIUM ANODE WITH A STEEL PLUG (WELDED)
TYPE D1 – MAGNESIUM ANODE WITH A STEEL PLUG (SCREWED)
TYPE E – MAGNESIUM ANODE WITH A STEEL PLUG (SCREWED)
TYPE F – MAGNESIUM ANODE WITH A STEEL PLUG AND INTEGRATED PTFE SEALING RING (WELDED)
TYPE F1 – MAGNESIUM ANODE WITH A STEEL PLUG AND INTEGRATED PTFE SEALING RING (SCREWED)
TYPE G – ANODE WITH A THREADED STEEL BOLT M8x30mm AND ISOLATION KIT
TYPE H – INSULATED MAGNESIUM ANODE
TYPE I – CHAIN ANODE WITH A THREADED STEEL BOLT M8x30mm AND ISOLATION KIT
TYPE J – INSULATED CHAIN ANODE
TYPE K – CHAIN ANODE
TYPE L – CHAIN ANODE
|THREADS||M6; M8||M5; M6||M8x15; M8x17; M8x23; M8x25; M8x30||M8x15; M8x17; M8x23; M8x25; M8x30|
|PLUGS||G¾||G1¼||G½||G¾; G1; G1¼; G1½||G¾; G1; G1¼||G¾; G1; G1¼||G¾; G1; G1¼||G¾; G1; G1¼|
We are continuously expanding our range of products. We are capable of launching the production of other anodes on request within a short period of time.