Zinc Coated Ductile Iron Pipe Manufacturers In India

Tubos India is one of the large Supplier for high quality Cast Iron Zinc Coated Pipe. The applications of these pipe are in Industrial pipeline system on shipping, fire protection, mine, oil field, textile, powder plants, etc. Zinc is different from others and very useful nonferrous metal. The largest market for metallic zinc is its usage in corrosion control coating systems, high performance. Zinc is resistant to most of the atmosphere conditions, yet it remains sufficiently reactive to cathodically protect ferrous metals such as steel and iron. In most of the corrosive atmospheres, when zinc substrates are top coated, they clearly displays a much longer service life than the same zinc coating(s) applied over bare iron or steel.

In the electrochemical series, zinc is a less noble metal than iron & also has more negative electrode potential. If zinc is in conductive contact with iron and an electrolyte such as water is present the zinc ions goes into solution. In electrochemical terms, the exposed surface of the iron forms cathode and the zinc-coated surface of the pipe forms an anode. Zinc ions moves to the damaged point and forms a layer of “scarring,” which stops the corrosion.