SIC Codes - Division D - Major Group 33: Primary Metal Industries

Major Group 33: Primary Metal Industries

This major group includes establishments engaged in smelting and refining ferrous and nonferrous metals from ore, pig, or scrap; in rolling, drawing, and alloying metals; in manufacturing castings and other basic metal products; and in manufacturing nails, spikes, and insulated wire and cable. This major group includes the production of coke. Establishments primarily engaged in manufacturing metal forgings or stampings are classified in Industry Group 346.

Industry Group 331: Steel Works, Blast Furnaces, And Rolling And
- 3312 Steel Works, Blast Furnaces (including Coke Ovens), And Rolling
  Establishments primarily engaged in manufacturing hot metal, pig iron, and silvery pig iron from iron ore and iron and steel scrap; converting pig iron, scrap iron, and scrap steel into steel; and in hot-rolling iron and steel into basic shapes, such as plates, sheets, strips, rods, bars, and tubing. Merchant blast furnaces and by-product or beehive coke ovens are also included in this industry. Establishments primarily engaged in manufacturing ferro and nonferrous additive alloys by electrometallurgical processes are classified in Industry 3313.
  - Armor plate, made in steel works or rolling mills
  - Axles, rolled or forged: made in steel works or rolling mills
  - Bars, iron: made in steel works or rolling mills
  - Bars, steel made in steel works or hotrolling mills
  - Beehive coke oven products
  - Billets, steel
  - Blackplate
  - Blast furnace products
  - Blooms
  - Car wheels, rolled
  - Chemical recovery coke oven products
  - Coal gas, derived from chemical recovery coke ovens
  - Coal tar crudes, derived from chemical recovery coke ovens
  - Coke, produced in beehive ovens
  - Coke, produced in chemical recovery coke ovens
  - Distillates, derived from chemical recovery coke ovens
  - Fence posts, iron and steel: made in steel works or rolling mills
  - Flats, iron and steel: made in steel works or hot-rolling mills
  - Forgings, iron and steel made in steel works or rolling mills
  - Frogs, iron and steel: made in steel works or rolling mills
  - Galvanized hoops, pipes, plates, sheets, and strips iron and steel
  - Gun forgings, iron and steel: made in steel works or rolling mills
  - Hoops, galvanized iron and steel
  - Hoops, iron and steel made in steel works or hot-rolling mills
  - Hot-rolled iron and steel products
  - Ingots, steel
  - Iron sinter, made in steel mills
  - Iron, pig
  - Nut rods, iron and steel made in steel works or rolling mills
  - Pipe, iron and steel made in steel works or rolling mills
  - Plates, made in steel works or rolling mills
  - Rail joints and fastenings, made in steel works or rolling mills
  - Railroad crossings, iron and steel: made in steel works or rollingmills
  - Rails, iron and steel
  - Rails rerolled or renewed
  - Rods iron and steel made in steel works or rolling mills
  - Sheet pilings, plain: iron and steel-made in steel works or rollingmills
  - Sheets, steel: made in steel works or hot-rolling mills
  - Shell slugs, steel made in steel works or rolling mills
  - Skelp, iron and steel
  - Slabs, steel
  - Spike rods, made in steel works or rolling mills
  - Sponge iron
  - Stainless steel
  - Steel works producing bars, rods, plates, sheets, structural shapes,
  - Strips, galvanized iron and steel: made in steel works or rolling mills
  - Strips, iron and steel: made in steel works or hot-rolling mills
  - Structural shapes, iron and steel
  - Tar, derived from chemical recovery coke ovens
  - Terneplate
  - Ternes, iron and steel: long or short
  - Tie plates, iron and steel
  - Tin-free steel
  - Tinplate
  - Tool steel
  - Tube rounds
  - Tubes, iron and steel: made in steel works or rolling mills
  - Tubing, seamless: steel
  - Well casings, iron and steel: made in steel works or rolling mills
  - Wheels, car and locomotive: iron and steel-mitse
  - Wire products, iron and steel: made steel works or rolling mills
  - Wrought pipe and tubing, made in steel works or rolling mills
- 3313 Electrometallurgical Products, Except Steel
  Establishments primarily engaged in manufacturing ferro and nonferrous metal additive alloys by electrometallurgical or metallothermic processes, including high percentage ferroalloys and high percentage nonferrous additive alloys. Establishments primarily engaged in manufacturing electrometallurgical steel are classified in Industry 3312.
  - Additive alloys, except copper
  - Ferroalloys (including high percentage)
  - Ferrochromium
  - Ferromanganese
  - Ferromolybdenum
  - Ferrophosphorus
  - Ferrosilicon
  - Ferrotitanium
  - Ferrotungsten
  - Ferrovanadium
  - High percentage ferroalloys
  - Manganese metal
  - Molybdenum silicon
  - Nonferrous additive alloys, high percentage: except copper
  - Spiegeleisen
  - Tungsten carbide powder by metallurgical process
- 3315 Steel Wiredrawing And Steel Nails And Spikes
  Establishments primarily engaged in drawing wire from purchased iron or steel rods, bars, or wire and which may be engaged in the further manufacture of products made from wire; establishments primarily engaged in manufacturing steel nails and spikes from purchased materials are also included in this industry. Rolling mills engaged in the production of ferrous wire from wire rods or hot-rolled bars produced in the same establishment are classified in Industry 3312. Establishments primarily engaged in drawing nonferrous wire are classified in Industry Group 335.
  - Barbed and twisted wire: made in wiredrawing plants
  - Baskets, steel: made in wiredrawing plants
  - Brads, steel: wire or cut
  - Cable, steel: insulated or armored
  - Chain link fencing, steel: made in wiredrawing plants
  - Fence gates, posts, and fittings: steel-made in wiredrawing plants
  - Form ties, made in wiredrawing plants
  - Horseshoe nails
  - Nails, steel: wire or cut
  - Paper clips, steel: made in wiredrawing plants
  - Spikes, steel: wire or cut
  - Staples, steel: wire or cut
  - Steel wire cages, made in wiredrawing plants
  - Tacks, steel: wire or cut
  - Tie wires, made in wiredrawing plants
  - Welded steel wire fabric, made in wiredrawing plants
  - Wire carts: household, grocery, and industrial-made in wire-drawing
  - Wire cloth, steel: made in wiredrawing plants
  - Wire garment hangers, steel: made in wiredrawing plants
  - Wire products, ferrous: made in wiredrawing plants
  - Wire, ferrous: made in wiredrawing plants
  - Wire, steel: insulated or armored
- 3316 Cold-rolled Steel Sheet, Strip, And Bars
  Establishments primarily engaged in: (1) cold-rolling steel sheets and strip from purchased hot-rolled sheets; (2) cold-drawing steel bars and steel shapes from purchased hot-rolled steel bars; and (3) producing other cold finished steel. Establishments primarily engaged in the production of steel, including hot-rolled steel sheets, and further cold-rolling such sheets are classified in Industry 3312.
  - Cold-finished steel bars: not made in hot-rolling mills
  - Cold-rolled steel strip, sheet, and bars: not made in hot-rolling mills
  - Corrugating iron and steel, cold-rolled: not made in hot-rolling mills
  - Flat bright steel strip, cold-rolled: not made in hot-rolling mills
  - Razor blade strip steel, cold-rolled: not made in hot-rolling mills
  - Sheet steel, cold-rolled: not made in hot-rolling mills
  - Wire, flat: cold-rolled strip: not made in hot-rolling mills
- 3317 Steel Pipe And Tubes
  Establishments primarily engaged in the production of welded or seamless steel pipe and tubes and heavy riveted steel pipe from purchased materials. Establishments primarily engaged in the production of steel, including steel skelp or steel blanks, tube rounds, or pierced billets, are classified in Industry 3312.
  - Boiler tubes, wrought-mfpm
  - Conduit: welded, lock joint, and heavy riveted-mfpm
  - Pipe seamless steel-mfpm
  - Pipe wrought: welded, lock joint, and heavy riveted-mfpm
  - Tubes, seamless steel-mfpm
  - Tubing, mechanical and hypodermic sizes- cold-drawn stainless
  - Well casing, wrought: welded, lock joint, and heavy riveted-mfpm
  - Wrought pipe and tubes: welded, lock joint, and heavy riveted-mfpm

Industry Group 332: Iron And Steel Foundries
- 3321 Gray And Ductile Iron Foundries
  Establishments primarily engaged in manufacturing gray and ductile iron castings, including cast iron pressure and soil pipes and fittings.
  - Brake shoes, railroad: cast iron
  - Car wheels, railroad: chilled cast iron
  - Castings, compacted graphite iron
  - Castings, gray iron and semisteel
  - Cooking utensils, cast iron
  - Couplings, pipe: pressure and soil pipecast iron
  - Ductile iron castings
  - Elbows, pipe: pressure and soil pipecast iron
  - Fittings, soil and pressure pipe: cast iron
  - Foundries, gray iron and semisteel
  - Gas pipe, cast iron
  - Gray iron foundries
  - Ingot molds and stools
  - Manhole covers, metal
  - Nipples, pipe: pressure and soil pipe-cast iron
  - Nodular iron castings
  - Pipe and fittings, soil and pressure: cast iron
  - Railroad car wheels, chilled cast iron
  - Rolling mill rolls, iron: not machined
  - Sash balances, cast iron
  - Sewer pipe, cast iron
  - Water pipe, cast iron
- 3322 Malleable Iron Foundries
  Establishments primarily engaged in manufacturing malleable iron castings.
  - Castings, malleable iron
  - Foundries, malleable iron
  - Pearlitic castings, malleable iron
- 3324 Steel Investment Foundries
  Establishments primarily engaged in manufacturing steel investment castings.
  - Investment castings, steel
- 3325 Steel Foundries, Not Elsewhere Classified
  Establishments primarily engaged in manufacturing steel castings, not elsewhere classified.
  - Alloy steel castings, except investment
  - Bushings, cast steel: except investment
  - Cast steel railroad car wheels
  - Castings, steel: except investment
  - Foundries, steel: except investment
  - Rolling mill rolls, steel: not machined
  - Steel foundries, except investment

Industry Group 333: Primary Smelting And Refining Of Nonferrous
- 3331 Primary Smelting And Refining Of Copper
  Establishments primarily engaged in smelting copper from the ore, and in refining copper by electrolytic or other processes. Establishments primarily engaged in rolling, drawing, or extruding copper are classified in Industry 3351.
  - Bars, refinery: primary copper
  - Blister copper
  - Blocks, copper
  - Copper ingots and refinery bars, primary
  - Copper smelting and refining, primary
  - Pigs, copper
  - Primary smelting and refining of copper
  - Slabs, copper: primary
- 3334 Primary Production Of Aluminum
  Establishments primarily engaged in producing aluminum from alumina and in refining aluminum by any process. Establishments primarily engaged in rolling, drawing, or extruding aluminum are classified in Industry Group 335.
  - Aluminum ingots and primary production shapes, from bauxite or
  - Extrusion ingot, aluminum: primary
  - Pigs, aluminum
  - Slabs, aluminum: primary
- 3339 Primary Smelting And Refining Of Nonferrous Metals, Except Copper
  Establishments primarily engaged in smelting and refining nonferrous metals, except copper and aluminum. Establishments primarily engaged in rolling, drawing, and extruding these nonferrous primary metals are classified in Industry 3356, and the production of bullion at the site of the mine is classified in Division B, Mining.
  - Antifriction bearing metals, lead-base: primary
  - Antimony refining, primary
  - Babbitt metal, primary
  - Beryllium metal
  - Bismuth refining, primary
  - Blocks, zinc, primary
  - Cadmium refining, primary
  - Chromium refining, primary
  - Cobalt refining, primary
  - Columbium refining, primary
  - Germanium refining, primary
  - Gold refining, primary
  - Ingots, primary: nonferrous metals, except copper and aluminum
  - Iridium refining, primary
  - Lead pigs, blocks, ingots, and refinery shapes: primary
  - Lead smelting and refining, primary
  - Magnesium refining, primary
  - Nickel refining, primary
  - Nonferrous refining, primary: except copper and aluminum
  - Nonferrous smelting, primary: except copper and aluminum
  - Pigs, primary: nonferrous metals, except copper and aluminum
  - Platinum-group metals refining, primary
  - Precious metal refining, primary
  - Primary refining of nonferrous metal: except copper and aluminum
  - Primary smelting of nonferrous metal: except copper and aluminum
  - Refining of nonferrous metal, primary: except copper and aluminum
  - Rhenium refining, primary
  - Selenium refining, primary
  - Silicon refining, primary (over 99 percent pure)
  - Silicon, epitaxial (silicon alloy)
  - Silicon, pure
  - Silver refining, primary
  - Slabs, primary: nonferrous metals, except copper and aluminum
  - Smelting of nonferrous metal, primary: except copper and aluminum
  - Spelter (zinc), primary
  - Tantalum refining
  - Tellurium refining, primary
  - Tin base alloys, primary
  - Tin refining, primary
  - Titanium metal sponge and granules
  - Zinc dust, primary
  - Zirconium metal sponge and granules

Industry Group 334: Secondary Smelting And Refining Of Nonferrous
- 3341 Secondary Smelting And Refining Of Nonferrous Metals
  Establishments primarily engaged in recovering nonferrous metals and alloys from new and used scrap and dross or in producing alloys from purchased refined metals. This industry includes establishments engaged in both the recovery and alloying of precious metals. Plants engaged in the recovery of tin through secondary smelting and refining, as well as by chemical processes, are included in this industry. Establishments primarily engaged in assembling, sorting, and breaking up scrap metal, without smelting and refining, are classified in Wholesale Trade, Industry 5093.
  - Aluminum extrusion ingot, secondary
  - Aluminum smelting and refining, secondary
  - Antimonial lead refining, secondary
  - Babbitt metal smelting and refining, secondary
  - Brass smelting and refining, secondary
  - Bronze smelting and refining, secondary
  - Copper smelting and refining, secondary
  - Detinning of cans
  - Detinning of scrap
  - Germanium refining, secondary
  - Gold smelting and refining, secondary
  - Ingots, nonferrous: smelting and refining-secondary
  - Iridium smelting and refining, secondary
  - Lead smelting and refining, secondary
  - Magnesium smelting and refining, secondary
  - Nickel smelting and refining, secondary
  - Nonferrous metal smelting and refining, secondary
  - Platinum-group metals smelting and refining, secondary
  - Precious metal smelting and refining, secondary
  - Recovering and refining of nonferrous metals
  - Recovery of silver from used photographic film
  - Secondary refining and smelting of nonferrous metals
  - Selenium refining, secondary
  - Silver smelting and refining, secondary
  - Solder (base metal), pig and ingot secondary
  - Tin smelting and refining, secondary
  - Zinc dust, reclaimed
  - Zinc smelting and refining, secondary

Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous
- 3351 Rolling, Drawing, And Extruding Of Copper
  Establishments primarily engaged in rolling, drawing, and extruding copper, brass, bronze, and other copper base alloy basic shapes, such as plate, sheet, strip, bar, and tubing. Establishments primarily engaged in recovering copper and its alloys from scrap or dross are classified in Industry 3341.
  - Bands, shell copper and copper alloy-made in copper rolling mills
  - Bars, copper and copper alloy
  - Brass rolling and drawing
  - Bronze rolling and drawing
  - Cartridge cups, discs, and sheets copper and copper alloy
  - Cups, primer and cartridge copper and copper alloy
  - Extruded shapes, copper and copper alloy
  - Pipe, extruded and drawn: brass, bronze, and copper
  - Plates, copper and copper alloy
  - Primer cups, copper and copper alloy
  - Rails, rolled and drawn: brass, bronze, and copper
  - Rods, copper and copper alloy
  - Rolling, drawing, and extruding of copper and copper alloys
  - Rotating bands, copper and copper alloy
  - Sheets, copper and copper alloy
  - Shell discs, copper and copper alloy
  - Slugs, copper and copper alloy
  - Strip, copper and copper alloy
  - Tubing, copper and copper alloy
  - Wire, copper and copper alloy made in brass mills
- 3353 Aluminum Sheet, Plate, And Foil
  Establishments primarily engaged in flat rolling aluminum and aluminum base alloy basic shapes, such as sheet, plate, and foil, including establishments producing welded tube. Also included are establishments primarily producing similar products by continuous casting.
  - Coils, sheet aluminum
  - Foil, plain aluminum
  - Plates, aluminum
  - Sheets, aluminum
  - Tubes, welded: aluminum
- 3354 Aluminum Extruded Products
  Establishments primarily engaged in extruding aluminum and aluminum base alloy basic shapes, such as rod and bar, pipe and tube, and tube blooms including establishments producing tube by drawing.
  - Bars, aluminum extruded
  - Coils, rod aluminum-extruded
  - Extruded shapes, aluminum
  - Pipe, aluminum extruded
  - Rods, aluminum extruded
  - Tube blooms, aluminum extruded
  - Tube, aluminum extruded or drawn
- 3355 Aluminum Rolling And Drawing, Not Elsewhere Classified
  Establishments primarily engaged in rolling, drawing, and other operations resulting in the production of aluminum ingot, including extrusion ingot, and aluminum and aluminum-base alloy basic shapes, not elsewhere classified, such as rolled and continuous cast rod and bar. Establishments primarily engaged in producing aluminum powder, flake, and paste are classified in Industry 3399, and those producing aluminum wire and cable from purchased wire bars, rods, or wire are classified in Industry 3357.
  - Bars, aluminum rolled
  - Cable, aluminum made in rolling mills
  - Coils, wire aluminum made in rolling mills
  - Extrusion ingot, aluminum made in rolling mills
  - Ingot, aluminum made in rolling mills
  - Rails, aluminum rolled and drawn
  - Rods, aluminum rolled
  - Slugs, aluminum
  - Structural shapes, rolled aluminum
  - Wire, aluminum made in rolling mills
- 3356 Rolling, Drawing, And Extruding Of Nonferrous Metals, Except
  Establishments primarily engaged in rolling, drawing, and extruding nonferrous metals other than copper and aluminum. The products of this industry are in the form of basic shapes, such as plate, sheet, strip, bar, and tubing. Establishments primarily engaged in recovering nonferrous metals and alloys from scrap or dross are classified in Industry 3341; those manufacturing gold, silver, tin, and other foils, except aluminum, are classified in Industry 3497; and those manufacturing aluminum foil are classified in Industry 3353.
  - Battery metal
  - Britannia metal, rolling and drawing
  - Extruded shapes, nonferrous metals and alloys, except copper and
  - Gold and gold alloy bars, sheets, strip, and tubing
  - Gold rolling and drawing
  - Lead and lead alloy bars, pipe, plates, rods, sheets, strip, and tubing
  - Lead rolling, drawing, and extruding
  - Magnesium and magnesium alloy bars, rods, shapes, sheets, strip, and
  - Magnesium rolling, drawing, and extruding
  - Nickel and nickel alloy pipe, plates, sheets, strips, and tubing
  - Nonferrous rolling, drawing, and extruding except copper and
  - Platinum and platinum alloy sheets and tubing
  - Platinum-group metals rolling, drawing, and extruding
  - Silver and silver alloy bars, rods, sheets, strip, and tubing
  - Silver rolling and drawing
  - Solder wire, bar acid core and rosin core
  - Tin and tin alloy bars, pipe, rods, sheets, strip, and tubing
  - Tin rolling and drawing
  - Titanium and titanium alloy bars, rods, billets, sheets, strip, and
  - Titanium from sponge
  - Tungsten basic shapes
  - Welding rods
  - Wire, nonferrous except copper and aluminum made in rolling mills
  - Zinc and zinc alloy bars, plates, pipe, rods, sheets, tubing, and wire
  - Zinc rolling, drawing, and extruding
  - Zirconium and zirconium alloy bars, rods, billets, sheets, strip, and
- 3357 Drawing And Insulating Of Nonferrous Wire
  Establishments primarily engaged in drawing, drawing and insulating, and insulating wire and cable of nonferrous metals from purchased wire bars, rods, or wire. Also included are establishments primarily engaged in manufacturing insulated fiber optic cable. Establishments primarily engaged in manufacturing glass fiber optic materials are classified in Industry 3229, and those manufacturing fabricated wire products from purchased wire are classified in Industry 3496.
  - Apparatus wire and cord made in wiredrawing plants
  - Automotive and aircraft wire and cable, nonferrous
  - Cable, nonferrous bare, insulated, or armored-mfpm
  - Coaxial cable, nonferrous
  - Communications wire and cable, nonferrous
  - Cord sets, flexible made in wiredrawing plants
  - Fiber optic cable
  - Magnet wire, insulated
  - Shipboard cable, nonferrous
  - Signal and control cable, nonferrous
  - Weatherproof wire and cable, nonferrous
  - Wire cloth, nonferrous: made in wiredrawing plants
  - Wire screening, nonferrous: made in wiredrawing plants
  - Wire, nonferrous: bare, insulated, or armored-mfpm

Industry Group 336: Nonferrous Foundries (castings)
- 3363 Aluminum Die-castings
  Establishments primarily engaged in manufacturing die-castings of aluminum (including alloys).
  - Aluminum die-casting, including alloys
- 3364 Nonferrous Die-castings, Except Aluminum
  Establishments primarily engaged in manufacturing nonferrous metal die-castings, except aluminum.
  - Beryllium die-castings
  - Copper die-castings
  - Die-casting nonferrous metals, except aluminum
  - Lead die-castings
  - Magnesium die-castings
  - Titanium die-castings
  - Zinc die-castings
- 3365 Aluminum Foundries
  Establishments primarily engaged in manufacturing aluminum (including alloys) castings, except die-castings.
  - Aluminum and aluminum-base alloy castings, except die-castings
  - Castings, aluminum: except die-castings
  - Cooking utensils, cast aluminum: except die-castings
  - Foundries, aluminum: except die-castings
  - Hospital utensils, cast aluminum: except die-castings
  - Household utensils, cast aluminum: except die-castings
  - Kitchen utensils, cast aluminum: except die-castings
  - Machinery castings, aluminum: except die-castings
  - Pressure cookers, domestic: cast aluminum, except die-castings
- 3366 Copper Foundries
  Establishments primarily engaged in manufacturing copper (including alloys) castings, except die-castings.
  - Bushings and bearings, except die-castings: brass, bronze, and copper
  - Castings, except die-castings: brass, bronze, copper, and
  - Copper and copper-base alloy castings, except die-castings
  - Copper foundries, except die-castings
  - Foundries: brass, bronze, copper, and copper-base alloy-except die-
  - Machinery castings: brass, copper, and copper-base alloy-except die-
  - Propellers, ship and screw: cast brass, bronze, copper, and
- 3369 Nonferrous Foundries, Except Aluminum And Copper
  Establishments primarily engaged in manufacturing nonferrous metal castings (including alloys), except all die-castings and other castings of aluminum or copper.
  - Beryllium castings, except die-castings
  - Castings, except die-castings and castings of aluminum and copper
  - Castings, precision, except die-castings: industrial and aircraft
  - Machinery castings, nonferrous: except aluminum, copper, copper
  - Magnesium castings, except die-castings
  - Nonferrous metal foundries, except aluminum, copper, and die
  - Nonferrous metal machinery castings: except aluminum, copper, and
  - Titanium castings, except die-castings
  - White metal castings, except die-castings: lead, antimony, and tin
  - Zinc castings, except die-castings

Industry Group 339: Miscellaneous Primary Metal Products
- 3398 Heat Treating
  Establishments primarily engaged in heat treating of metal for the trade.
  - Annealing of metal for the trade
  - Brazing (hardening) metal for the trade
  - Burning metal for the trade
  - Hardening of metal for the trade
  - Heat treating of metal for the trade
  - Shot peening-treating steel to reduce fatigue
  - Stainless steel, brazing (hardening) for the trade
  - Tempering of metal for the trade
- 3399 Primary Metal Products, Not Elsewhere Classified
  Establishments primarily engaged in manufacturing primary metal products, not elsewhere classified, such as nonferrous nails, brads, and spikes, and metal powder, flakes, and paste.
  - Aluminum atomized powder
  - Balls, steel
  - Brads, nonferrous metal (including wire)
  - Flakes, metal
  - Iron powdered
  - Laminating steel for the trade
  - Nails, nonferrous metal (including wire)
  - Paste, metal
  - Powder, metal: except artists' materials
  - Reclaiming ferrous metals from clay
  - Recovery of iron ore from open hearth slag
  - Silver powder, except artists' materials
  - Spikes, nonferrous metal (including wire)
  - Staples, nonferrous metal (including wire)
  - Tacks, nonferrous metal (including wire)