SIC 332-digit major group · SIC 1987Manufacturing

SIC Code 33: Primary Metal Industries

The SIC code for Primary Metal Industries is 33.

Primary Metal Industries establishments smelt, refine, and cast ferrous and nonferrous metals into basic shapes — ingots, billets, bars, sheets, and tubes — that serve as inputs for fabricated metal products and manufacturing.

SIC 33 is a 2-digit major group in Manufacturing, covering 7 industry groups and 26 4-digit SIC industries.

US company data for establishments classified under SIC 33

Industry Groups

SIC Industries

Major Group Code

Classification

Industry Groups (3-digit)

SIC Code	Industry Group Title	Industries
331	SIC 331 — Steel Works, Blast Furnaces, and Rolling and Finishing Mills	5
332	SIC 332 — Iron and Steel Foundries	4
333	SIC 333 — Primary Smelting and Refining of Nonferrous Metals	3
334	SIC 334 — Secondary Smelting and Refining of Nonferrous Metals	1
335	SIC 335 — Rolling, Drawing, and Extruding of Nonferrous Metals	6
336	SIC 336 — Nonferrous Foundries (Castings)	5
339	SIC 339 — Misc Primary Metal Products	2

SIC 1987

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Other Major Groups in Manufacturing

SIC 20 — Food and Kindred Products9 industry groups

SIC 21 — Tobacco Products4 industry groups

SIC 22 — Textile Mill Products9 industry groups

SIC 23 — Apparel & Other Finished Products Made From Fabrics & Similar Materials9 industry groups

SIC 24 — Lumber and Wood Products, Except Furniture6 industry groups

SIC 25 — Furniture and Fixtures5 industry groups

SIC 26 — Paper and Allied Products5 industry groups

SIC 27 — Printing, Publishing, and Allied Industries9 industry groups

SIC 28 — Chemicals and Allied Products8 industry groups

SIC 29 — Petroleum Refining and Related Industries3 industry groups

SIC 30 — Rubber and Miscellaneous Plastics Products5 industry groups

SIC 31 — Leather and Leather Products7 industry groups

SIC 32 — Stone, Clay, Glass, and Concrete Products9 industry groups

SIC 34 — Fabricated Metal Products, Except Machinery & Transportation Equipment9 industry groups

SIC 35 — Industrial and Commercial Machinery and Computer Equipment9 industry groups

SIC 36 — Electronic & Other Electrical Equipment & Components8 industry groups

SIC 37 — Transportation Equipment7 industry groups

SIC 38 — Measuring, Analyzing & Controlling Instruments; Photo Goods; Watches6 industry groups

SIC 39 — Miscellaneous Manufacturing Industries6 industry groups

Need the NAICS equivalent? convert a SIC code to NAICS using the mapping table — SIC 1987 four-digit industries paired with NAICS 2022 at the five-digit industry level, with coverage gaps stated.