331513

Analysis

NAICS 331513 is the 2022 national industry for steel foundries (except investment), part of 33151 (Ferrous Metal Foundries). Census lists 8 example activities under it in the official index.

Between 2018 and 2023 the number of establishments fell 22% and employment fell 21%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.

County Business Patterns counts 141 US establishments in this code in 2023, employing 9,928 people at an average annual payroll of $65,700 per employee (44th percentile of national industries). 14% of the establishments have fewer than five employees, which points to larger operations.

Its index entries, the activities Census uses to assign businesses to this code, include alloy steel castings (except investment), unfinished…, cast steel railroad car wheels, unfinished, manufacturing, castings, steel (except investment), unfinished… and foundries, steel (except investment), among 8 in all.

Its goods appear in 4 statistical lines of the US tariff schedule, mostly under headings 8455 (metal-rolling mills and rolls therefor; parts thereof) and 7325 (other cast articles of iron or steel). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

For example, manufacturing steel investment castings are classified in 331512 (Steel Investment Foundries) instead.