How to deal with carbon steel flanges easy to rust?

We all know that one of the obvious disadvantages of carbon steel flange compared with stainless steel is easy to rust, not as durable as stainless steel. And in order to make carbon steel products less prone to rust, what will be done?

First of all, it depends on long-term rust prevention or short-term demand.

If it is necessary to prevent rust for a long time, it is generally to do surface treatment.

Galvanized BS4504 plate flanges

Hot dip galvanized

Of course, the best method is hot galvanizing. Immerse the derusted steel flanges into the molten zinc at 500 ℃ to make the steel surface adhere to the zinc layer. Indeed, the price of this treatment is relatively high.

Chrome, nickel, galvanized, etc

The cost is not so high, such as chrome, nickel, zinc and so on. Among them, galvanizing is a more conventional and frequently used surface treatment. It should be noted that the galvanizing here refers to the cold galvanizing (i.e. electro galvanizing), which is different from the hot galvanizing on the top. It is thinner than the hot galvanizing in thickness, and its corrosion resistance is also worse.

BS4504 ASTM A105 weld neck flanges

If long-term rust prevention is not required, then use anti coating.

This temporary anti – rust is generally used in anti-rust oil or anti-rust fluid. Among them the antirust oil antirust time is longer than the latter, but antirust fluid to do the word of spray need not clean, can be sprayed directly.

Hebei Haihao Group will provide suitable advice according to your inquiries, we also accept customized products.If you want to know more about our forged flanges,please email to us:sales@haihaogroup.com