What is pickling and oiling steel?
Abbreviation: P&O
Related Terms
HRPO Steel(HRPO)
HRPO stands for Hot-Rolled Pickled and Oiled. It is hot-rolled steel that has been acid-cleaned (pickled) to remove mill scale and coated with oil to prevent rust. Preferred for stamping and laser cutting.
Hot-Rolled Steel(HR)
Hot-rolled steel is produced by rolling steel at high temperature (above recrystallization point). It has a rough mill scale surface and looser tolerances than cold-rolled, but is less expensive and widely stocked.
Mill Finish
Mill finish is the surface condition of metal as it comes directly from the rolling mill — no additional polishing or treatment. It often has a dull, slightly rough appearance with mill scale on hot-rolled steel.
Steel Blank
A steel blank is a metal blank made from steel — typically carbon steel, stainless steel, or alloy steel — cut to size for further processing such as stamping, laser cutting, or machining.