This industry group comprises establishments primarily engaged in
pouring molten metal into molds or dies to form castings.
Establishments making castings and further manufacturing, such as
machining or assembling, a specific manufactured product are classified
in the industry of the finished product. Foundries may perform
operations, such as cleaning and deburring, on the castings they
manufacture. More involved processes, such as tapping, threading,
milling, or machining to tight tolerances, that transform castings into
more finished products are classified elsewhere in the manufacturing
sector based on the product being made.
Establishments in this industry group make castings from purchased
metals or in integrated secondary smelting and casting facilities. When
the production of primary metals is combined with making castings, the
establishment is classified in 331 with the primary metal being made.
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