Various Styles of Protective Steel Coating and Their Purposes

Steel is part of our daily lives. We see it everywhere, in construction and other various industries, windows, pipelines, in public areas, etc. This material is favoured because it is durable, affordable and pliant. They are also aesthetically pleasing that you would see them in their unrefined state although their surfaces are usually polished for aesthetic and preservation purposes.

When purchasing steel, you would not be able to buy one in its raw state because even if the steel is in its non-decorative state, there is still a protective finish on it as the steel’s protection against weather conditions and other factors that are damaging to the steel.

Powder Coating

Of all the protective steel coatings, powder coating is the most affordable and with a surface that is impact resistant. They also come in various vibrant colours making them a popular choice for decorative applications. Steel that has undergone powder coating is also durable and resistant to corrosion. They are also environmentally safe because there are no harmful solvents when manufacturing them. It also requires little to no maintenance because of its durability and resistance to rust.

Purposes: For canopies, umbrellas and other outside space decorative elements, boat sails, etc.

Epoxy Coating

If you are looking at steel protective coatings for industrial purposes, go with steel that has epoxy coating. Steel that is protected with epoxy coating is impervious to corrosive fluids, resistant to extreme temperatures, protected against abrasion, etc. Hence, it is the top choice for steel that will be used for heavy duty industries. Similar to powder coated steel, epoxy coating is also non-toxic and since it is durable, the need to recoat the steel with epoxy is also minimized, resulting to less chemical.

Purposes: For power plants, construction, pipelines for gas and oil, machineries, etc.

Metal Plating

Metal plating gives the same benefit as powder and epoxy coating; however, it does not provide a smooth finish especially if the steel has a lot of surface defects. Although there are some extra benefits to metal plating such as increased solderability, enhanced paint adhesion, increased magnetism and for gold metal plating, decorative appeal. Since there are numerous metals that could be used (gold, copper, nickel, chrome, cadmium, zinc, tin, silver, rhodium) there are also varied purposes.

Purposes: screws, nails, marine and aerospace applications, household items such as doorknobs, shower fixtures, cutleries, circuit boards, jewellery, tins, etc.

Hot Dip Galvanizing

Hot dip galvanized steel is used for products that would be exposed to UV rays or salt water. There are also numerous benefits to using this process. Number one is that it is easy to do. Only a few hours are needed to protect a simple steel while it may take up to a week for a more complicated system. The initial and lifetime cost is also practical and since the process involves dipping the steel in molten zinc, it provides complete coverage.

Purposes: paper mill, water treatment plants

All these processes provide the same benefits. They only differ when it comes to the varied purposes and which one is more applicable depending on the use.

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