The Service Life of Galvanized Steel Pipe Fittings

The service life of galvanized steel pipe fittings is long, but the service life is different in different environments: 13 years in heavy industrial areas, 50 years in the ocean, 104 years in the suburbs, and 30 years in the city. The production of yellow water is directly caused by galvanizing. Due to the threaded connection, the galvanized layer will be damaged at the connection and rust will be produced. It is caused by the iron oxide formed by iron oxidation being contained in the water.

With the development of industry, hot-dip galvanizing products have been used in many fields. The advantage of hot-dip galvanizing is that it has a long anti-corrosion period. It has been a popular anti-corrosion treatment method to adapt to a wide range of environments. It is widely used in electric power towers, communication towers, railways, highway protection, street lamp poles, marine components, building steel structural components, substation ancillary facilities, light industry, etc.

Galvanized steel pipes have a long corrosion resistance life. The principle of spraying aluminum and zinc anti-corrosive coatings on steel structures is cathodic protection. In a corrosive environment, even if the anti-corrosive coating is partially damaged, galvanized steel pipes still have to sacrifice themselves to protect the steel. Effect.

Galvanized steel pipe is divided into two methods: arc spraying and same flame spraying. Compared with flame spraying, arc spraying greatly improves work efficiency and work safety. The bonding force of the coating is also much greater than that of flame spraying, so the quality of the coating can fully meet the needs of long-term corrosion protection. In the United States, the cost of arc spraying anti-corrosion construction is lower than that of heavy anti-corrosion paint, so the spraying technology is steel The most effective anti-corrosion method of structure.