Cathodic protection is one of the most effective methods to prevent electrochemical corrosion of metals. It is through the protection of the metal to apply a certain cathodic current, so that it produces cathodic polarization, when the potential of the metal is negative to a certain potential value, the anodic dissolution process of corrosion will be effectively inhibited. According to the different ways of providing cathodic current, cathodic protection is divided into two kinds of sacrificial anode method and applied current method. Sacrificial anode method is a more negative potential metal or alloy and the protection of metal structures electrically connected, through the continuous consumption of electro-negative metal or alloy dissolution, to provide protection current to the protected material, so that the metal structures are protected. The external current method is to convert the external alternating current into low-voltage direct current, through the auxiliary anode to protect the furnace current to the protected metal structure, so that corrosion is inhibited, the system through the reference electrode to measure the potential and the control signal back-explosion to the constant potential meter. To adjust the outgoing current, so that the metal structure in a good state of protection.

In general, the cost of cathodic protection accounts for only 1%-3% of the cost of the protected metal structure, while the service life of the structure can be extended exponentially or even dozens of times. Because cathodic protection has the advantages of simple equipment, convenient construction, and long protection time. In recent years, it has been developed and widely used, and is an applicable technology with low investment, good effect and more obvious economic benefits.

The company has been engaged in the research and application of cathodic protection technology for many years, and has integrated the research and development, design, production, construction and engineering contract of cathodic protection technology and products. The company has undertaken nearly 1,000 cathodic protection projects in the fields of ships, port facilities, buried pipelines and networks, petrochemical industry, electric power, marine engineering, etc.

○ Application areas

Ships, port facilities, offshore, buried pipelines and networks, storage tanks, power plants, oil refineries and chemical plants, reinforced concrete structures and pile foundations of buildings.

○ Service scope

Design and construction of various cathodic protection projects, various cathodic protection products, technical training, technical guidance and technical services

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