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US Standard Industrial Classification (SIC) Code Lookup

Division: D - Manufacturing

US-SIC Code 3443 - Fabricated Plate Work (Boiler Shops)

Industry Description

Establishments primarily engaged in manufacturing power and marine boilers, pressure and nonpressure tanks, processing and storage vessels, heat exchangers, weldments and similar products, by the process of cutting, forming and joining metal plates, shapes, bars, sheet, pipe mill products and tubing to custom or standard design, for factory or field assembly. Establishments primarily engaged in manufacturing warm air heating furnaces are classified in Industry 3585; those manufacturing other nonelectric heating apparatus, except power boilers, are classified in Industry 3433; those manufacturing household cooking apparatus are classified in Industry 3631; and those manufacturing industrial process furnaces and ovens are classified in Industry 3567.

Business Examples

Common types of business activities within US SIC 3443 - Fabricated Plate Work (Boiler Shops) are:

  • Absorbers, gas
  • Accumulators (industrial pressure vessels)
  • Acetylene cylinders
  • Aftercooler shells
  • Air preheaters, nonrotating: plate type
  • Air receiver tanks, metal plate
  • Airlocks
  • Annealing boxes, pots, and covers
  • Atomic waste casks
  • Autoclaves, industrial
  • Baffles
  • Bails, ladle
  • Bins, prefabricated metal plate
  • Boiler shop products: industrial boilers, smokestacks, and steel tanks
  • Boilers: industrial, power, and marine
  • Boxes, condenser: metal plate
  • Breechings, metal plate
  • Buoys, metal
  • Cable trays, metal plate
  • Caissons, metal plate
  • Cars for hot metal
  • Casing, boiler: metal plate
  • Casings, scroll
  • Chutes, metal plate
  • Condensers, barometric
  • Condensers, steam
  • Containers, shipping metal plate (bombs, etc.)except missile casings
  • Cooling towers, metal plate
  • Cryogenic tanks, for liquids and gases: metal plate
  • Culverts, metal plate
  • Cupolas, metal plate
  • Cyclones, industrial: metal plate
  • Cylinders, pressure: metal plate
  • Digesters, process: metal plate
  • Ducting, metal plate
  • Economizers (boilers)
  • Evaporators (process vessels), metal plate
  • Exchangers, heat: industrial, scientific, and nuclear
  • Farm storage tanks, metal plate
  • Fermenters (process vessels), metal plate
  • Floating covers, metal plate
  • Flumes, metal plate
  • Forms, collapsible: for tunnels
  • Fractionating columns, metal plate
  • Fuel tanks, metal plate
  • Fumigating chambers, metal plate
  • Gas holders, metal plate
  • Gas tanks, metal plate
  • Heat transfer drives (finned tubing)
  • High vacuum coaters, metal plate
  • Hoods, industrial: metal plate
  • Hooks, crane: laminated plate
  • Hoppers, metal plate
  • Housing cabinets for radium, metal plate
  • Housings, pressure
  • Hydropneumatic tanks, metal plate
  • Intercooler shells
  • Jackets, industrial: metal plate
  • Kettles (process vessels), metal plate
  • Knockouts, free water: metal plate
  • Ladles, metal plate
  • Liners, industrial: metal plate
  • Liquid oxygen tanks, metal plate
  • Melting pots, for metal
  • Missile silos and components, metal plate
  • Mixers for hot metal
  • Nuclear core structurals, metal plate
  • Nuclear shielding, metal plate
  • Oil storage tanks, metal plate
  • Penstocks, metal plate
  • Perforating on heavy metal
  • Pile shells, metal plate
  • Pipe, large diameter: metal plate-made by plate fabricators
  • Plate work, fabricated: cutting, punching, bending, and shaping
  • Precipitators (process vessels), metal plate
  • Pressure vessels, industrial: metal plate-made in boiler shops
  • Pressurizers and auxiliary equipment, nuclear: metal plate
  • Reactor containment vessels, metal plate
  • Reactors, nuclear: military and industrial
  • Retorts, industrial
  • Rocket transportation casings
  • Separators, industrial process: metal plate
  • Septic tanks, metal plate
  • Skid tanks, metal plate
  • Smelting pots and retorts
  • Smokestacks, boiler plate
  • Space simulation chambers, metal plate
  • Spheres, for liquids or gas: metal plate
  • Standpipes
  • Steam jet after coolers
  • Steam jet inter condensers
  • Sterilizing chambers, metal plate
  • Stills, pressure: metal plate
  • Storage tanks, metal plate
  • Surge tanks, metal plate
  • Tanks for tank trucks, metal plate
  • Tanks, metal plate: lined
  • Tanks, standard and custom fabricated: metal plate-made in boiler
  • Towers, tank: metal plate
  • Towers: bubble, cooling, fractionating-metal plate
  • Trash racks, metal plate
  • Troughs, industrial metal plate
  • Truss plates, metal
  • Tunnel lining, metal plate
  • Tunnels, vacuum: metal plate
  • Tunnels, wind
  • Vacuum tanks, metal plate
  • Vats, metal plate
  • Vessels, process and storage: metal plate (made in boiler shops)
  • Water tanks, metal plate
  • Weldments

IBISWorld Industry Research Report

Structural Metal Product Manufacturing in the US (33231)

Revenue 2025

$95.2bn

Growth 2025

2.95%

Key Trends

  • Drastic increases in input costs have ultimately contributed to profit declines within the industry

  • Disposable income is expected to increase, strengthening demand among consumers

  • Growth in the industry's key downstream markets is expected to support revenue growth

Products and Services

US-SIC Hierarchy 3443 - Fabricated Plate Work (Boiler Shops)

US-SIC Code 3443 - Fabricated Plate Work (Boiler Shops) sits in the 2-digit Fabricated Plate Work (Boiler Shops) sector. US SIC codes can be 2 to 8 digits and the further along the hierarchy, the more detailed and specific the category will be.

Division: D

Division Title: Manufacturing

2 Digits 3 Digits 4 Digits

Extended US-SIC Hierarchy for 3443 - Fabricated Plate Work (Boiler Shops)

For business marketing and targeting, US SIC Codes have been extended to provide more specific classifications within US-SIC 3443 - Fabricated Plate Work (Boiler Shops). Extended US SIC Codes are being continuously updated to reflect the current business environment.

6 Digit SIC Codes

  • 344301 Accumulators (manufacturers)
  • 344302 Smoke stacks (manufacturers)
  • 344303 Cylinders-gas (manufacturers)
  • 344304 Fabricated plate work-boiler shops
  • 344305 Tanks-manufacturers
  • 344306 Kettles (manufacturers)
  • 344307 Chutes-metal plate-manufacturers
  • 344311 Heat exchangers-manufacturers
  • 344312 Nuclear reactors-manufacturers
  • 344314 Heat transfer materials (manufacturers)
  • 344315 Vessels-pressure (manufacturers)
  • 344316 Pressurization equipment (mfrs)
  • 344319 Condensers-tubes & tubing (mfrs)
  • 344320 Melting pots (manufacturers)
  • 344321 Manufacturing containers-steel
  • 344399 Tank heads (manufacturers)

8 Digit SIC Codes

  • 34430000 Fabricated plate work (boiler shop)
  • 34430100 Industrial vessels, tanks, and containers
  • 34430101 Autoclaves, industrial
  • 34430102 Bins, prefabricated metal plate
  • 34430103 Columns (fractioning, etc.): metal plate
  • 34430104 Cryogenic tanks, for liquids and gases
  • 34430105 Cyclones, industrial: metal plate
  • 34430106 Digesters, process: metal plate
  • 34430107 Drums, knockout (reflux etc.): metal plate
  • 34430108 Dumpsters, garbage
  • 34430109 Farm storage tanks, metal plate
  • 34430110 Fuel tanks (oil, gas, etc.), metal plate
  • 34430111 Gas holders, metal plate
  • 34430112 Hoppers, metal plate
  • 34430113 Housings, pressure
  • 34430114 Jackets, industrial: metal plate
  • 34430115 Process vessels, industrial: metal plate
  • 34430116 Separators, industrial process: metal plate
  • 34430117 Spheres, for liquids or gas: metal plate
  • 34430118 Stills, pressure: metal plate
  • 34430119 Tank towers, metal plate
  • 34430120 Tanks for tank trucks, metal plate
  • 34430121 Tanks, lined: metal plate
  • 34430122 Tanks, standard or custom fabricated: metal plate
  • 34430123 Towers (bubble, cooling, fractionating, etc.): metal plate
  • 34430124 Trash racks, metal plate
  • 34430125 Vats, metal plate
  • 34430126 Vessels, process or storage (from boiler shops): metal plate
  • 34430127 Water tanks, metal plate
  • 34430200 Heat exchangers, condensers, and components
  • 34430201 Air coolers, metal plate
  • 34430202 Air preheaters, nonrotating: plate type
  • 34430203 Barometric condensers
  • 34430204 Condenser boxes, metal plate
  • 34430205 Condensers, steam
  • 34430206 Cooling towers, metal plate
  • 34430207 Finned tubes, for heat transfer
  • 34430208 Heat exchangers, plate type
  • 34430209 Heat exchangers: coolers (after, inter), condensers, etc.
  • 34430300 Boiler and boiler shop work
  • 34430301 Boiler casing, metal plate
  • 34430302 Boiler shop products: boilers, smokestacks, steel tanks
  • 34430303 Boilers: industrial, power, or marine
  • 34430304 Economizers (boilers)
  • 34430400 Plate work for the metalworking trade
  • 34430401 Annealing boxes, pots, or covers
  • 34430402 Cars, for hot metal
  • 34430403 Mixers, for hot metal
  • 34430404 Pots: annealing, melting, or smelting
  • 34430405 Retorts, industrial: smelting, etc.
  • 34430500 Plate work for the nuclear industry
  • 34430501 Atomic waste casks
  • 34430502 Housing cabinets for radium, metal plate
  • 34430503 Nuclear core structurals, metal plate
  • 34430504 Nuclear reactors, military or industrial
  • 34430505 Nuclear shielding, metal plate
  • 34430506 Pressurizers or auxiliary equipment, nuclear: metal plate
  • 34430507 Reactor containment vessels, metal plate
  • 34430600 Liners/lining
  • 34430601 Liners, industrial: metal plate
  • 34430602 Tunnel lining, metal plate
  • 34430700 Metal parts
  • 34430701 Baffles
  • 34430702 Breechings, metal plate
  • 34430703 Cable trays, metal plate
  • 34430704 Crane hooks, laminated plate
  • 34430705 Floating covers, metal plate
  • 34430706 Forms for tunnels, collapsible
  • 34430707 Pile shells, metal plate
  • 34430800 Chutes and troughs
  • 34430801 Chutes, metal plate
  • 34430802 Flumes, metal plate
  • 34430803 Penstocks, metal plate
  • 34430804 Troughs, industrial: metal plate
  • 34430900 Pipe, standpipe, and culverts
  • 34430901 Culverts, metal plate
  • 34430902 Pipe, large diameter: metal plate
  • 34430903 Standpipes
  • 34431000 Wind and vacuum tunnels
  • 34431001 Vacuum tunnels, metal plate
  • 34431002 Wind tunnels
  • 34431100 Chambers and caissons
  • 34431101 Airlocks
  • 34431102 Caissons, metal plate
  • 34431103 Fumigating chambers, metal plate
  • 34431104 Space simulation chambers, metal plate
  • 34431105 Sterilizing chambers, metal plate
  • 34439900 Fabricated plate work (boiler shop), nec
  • 34439901 Buoys, metal
  • 34439902 Containers, shipping (bombs, etc.): metal plate
  • 34439903 Cupolas, metal plate
  • 34439904 Cylinders, pressure: metal plate
  • 34439905 Ducting, metal plate
  • 34439906 High vacuum coaters, metal plate
  • 34439907 Hoods, industrial: metal plate
  • 34439908 Ladle bails
  • 34439909 Ladles, metal plate
  • 34439910 Missile silos and components, metal plate
  • 34439911 Perforating on heavy metal
  • 34439912 Rocket transportation casings
  • 34439913 Scroll casings
  • 34439914 Smokestacks, boiler plate
  • 34439915 Truss plates, metal
  • 34439916 Weldments

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US SIC Code Directory

Each US SIC Code is part of a Division, which corresponds with a numerical range. Select a Division category from the table below, then drill down to discover the industries within that Division.

Division US-SIC Code Sector title
A 01-09 Agriculture, Forestry, and Fishing
B 10-14 Mining
C 15-17 Construction
D 20-39 Manufacturing
E 40-49 Transportation, Communications, Electric, Gas, and Sanitary Services
F 50-51 Wholesale Trade
G 52-59 Retail Trade
H 60-67 Finance, Insurance, and Real Estate
I 70-89 Services
J 90-99 Public Administration

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