When steel is made, it is rolled out hot, bright red to orange hot temps. This creates the scale on the surface. Pickling is an acid bath that removes the scale (iron oxide). However the now bare surface needs some protection so the mill applies a light oil film to protect against corrosion. Hot rolled pickled and oiled does not have as nice of surface finish as cold rolled.
Cold rolled can also have some light oil to help prevent corrosion. HR has a thickness limit, so thinner sheet, like typically used in car bodies for example, is CR. CR also has a nicer surface that is smoother with less pits.
The company is the world’s best pickled and oiled steel plate supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
In addition to regular Hot Rolled Steel products, we supply coil and sheet steel in a conditioned form referred to as &#;Hot Rolled, Pickled and Oiled&#;.
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At Impact Steel, we strive to meet the requirements of each customer. We know that different steel products are required for the wide variety of applications of Hot Rolled, Pickled and Oiled steel, and proper selection of the steel grade and production processing practices are imperative. We can ensure you get the right steel products to adequately fulfil your requirements.
General exposure to oxygen in the air creates oxide layers (or scales), on the surface of the steel. The steel is dipped into tanks of hydrochloric acid, causing a complex reaction that almost removes this scaling entirely.
Prior to treatment, any surface particles such as dirt, dust, oil, rust, paint, tape or any other residues or substances require removal by alkaline, or other alternate cleaning methods. The primary advantage or purpose of the pickling and oiling conditioning is to reinforce the steel&#;s protective properties, in particular, rust.
If you want to learn more, please visit our website Hot Dipped Galvanized Coil For Conditioning Systems.