Nucor Corporation engages in manufacture and sale of steel and steel products. It operates in three segments: steel mills, steel products, and raw materials. The Steel Mills segment produces hot-rolled, cold-rolled, and galvanized sheet steel products; plate steel products; wide-flange beams, beam blanks, and H-piling and sheet piling structural steel products; bar steel products, such as blooms, billets, concrete reinforcing and merchant bars, and engineered special bar quality products; and engages in the steel trading and rebar distribution businesses. This segment sells its products to steel service centers, fabricators, and manufacturers in the United States, Canada, and Mexico. The Steel Products segment offers steel joists and joist girders, steel decks, and galvanized torque tubes for used in solar arrays, hollow structural section steel tubing, electrical conduit, fabricated concrete reinforcing steel, cold finished steel, steel fasteners, steel grating and expanded metal, wire and wire mesh, metal building systems, insulated metal panels, steel racking, overhead doors, and utility towers and structures for communications and energy transmission. This segment is also involved in the piling distribution business. The Raw Materials segment produces direct reduced iron (DRI); brokers ferrous and nonferrous metals, pig iron, hot briquetted iron, and DRI; supplies ferro-alloys; processes ferrous and nonferrous scrap metal; and engages in the natural gas production and industrial gas business. This segment sells its ferrous scrap to electric arc furnace steel mills and foundries for manufacturing process; and nonferrous scrap metal to aluminum can producers, secondary aluminum smelters, steel mills and other processors, and consumers of various nonferrous metals. It markets its products through in-house sales force; and internal distribution and trading companies. Nucor Corporation was founded in 1905 and is headquartered in Charlotte, North Carolina.

Lincoln Electric Holdings, Inc., through its subsidiaries, designs, develops, manufactures, and sells welding, cutting, and brazing products worldwide. The company operates through three segments: Americas Welding, International Welding, and The Harris Products Group. It offers brazing and soldering filler metals, arc welding equipment, plasma and oxyfuel cutting systems, wire feeding systems, fume control equipment, welding accessories, and specialty gas regulators, and education solutions, as well as a portfolio of automated solutions for joining, cutting, material handling, module assembly, and end of line testing, as well as involved in brazing and soldering alloys, and in the retail business in the United States. In addition, the company manufactures copper and aluminum headers, distributor assemblies, and manifolds for the heating, ventilation, and air conditioning sector in the United States and Mexico; provides specialty welding consumables, wear plates and maintenance and repair services for alloy and wear-resistant products used in mining, steel, agricultural, and industrial mill applications; and designs and manufactures robotic assembly and arc welding systems that automate the tacking and welding of steel beams. Further, the company serves general fabrication, oil and gas, power generation, process, automotive and transportation, and construction and infrastructure industries, as well as heavy fabrication, ship building, and maintenance and repair markets. It sells its products directly to users of welding products, as well as through industrial distributors, retailers, and agents. The company was founded in 1895 and is headquartered in Cleveland, Ohio.

Crane Company, together with its subsidiaries, manufactures and sells engineered industrial products in the United States, Canada, the United Kingdom, Continental Europe, and internationally. The company operates in three segments: Aerospace & Electronics, Process Flow Technologies, and Engineered Materials. The Aerospace & Electronics segment supplies critical components and systems, including original equipment and aftermarket parts for commercial aerospace, as well as the military aerospace, defense, and space markets. This segment also offers pressure sensors for aircraft engine control, aircraft braking systems for commercial aircraft and fighter jets, power conversion solutions for spacecraft, and lubrication systems. The Process Flow Technologies segment provides engineered fluid handling equipment for mission-critical applications. It offers process valves and related products, such as lined pipe, fittings and hoses, air-operated diaphragm and peristaltic pumps, instrumentation and sampling systems, valve positioning and control systems, and valve diagnostic and calibration systems; commercial valves; and pumps and systems. The Engineered Materials segment manufactures fiberglass-reinforced plastic panels and coils for use in the manufacturing of recreational vehicles, as well as in commercial and industrial building applications. This segment sells directly to RV, trailer, and truck manufacturers, as well as through distributors and retailers. The company provides its products and solutions to end markets, including commercial and military aerospace, defense, and space; chemical and pharmaceutical production; water and wastewater; non-residential and municipal construction; energy; and other general industrial and consumer-related applications. The company was formerly known as Crane Holdings, Co. Crane Company was founded in 1855 and is based in Stamford, Connecticut.

Commercial Metals Company manufactures, recycles, and fabricates steel and metal products, and related materials and services in the United States, Poland, China, and internationally. It operates through three segments: North America Steel Group; Europe Steel Group; and Emerging Businesses Group. The company processes and sells ferrous and nonferrous scrap metals to steel mills and foundries, aluminum sheet and ingot manufacturers, brass and bronze ingot makers, copper refineries and mills, secondary lead smelters, specialty steel mills, high temperature alloy manufacturers, and other consumers. It also manufactures and sells finished long steel products, including reinforcing bar, merchant bar, light structural, and other special sections, as well as semi-finished billets for rerolling and forging applications. In addition, the company provides fabricated rebar used to reinforce concrete primarily in the construction of commercial and non-commercial buildings, hospitals, convention centers, industrial plants, power plants, highways, bridges, arenas, stadiums, and dams; sells and rents construction-related products and equipment to concrete installers and other businesses; and manufactures and sells strength bars for the truck trailer industry, special bar steels for the energy market, and armor plates for military vehicles. Further, it manufactures rebars, merchant bars, and wire rods; and sells fabricated rebars, wire meshes, welded steel mesh, wire rod, cold rolled rebar, cold rolled wire rod, assembled rebar cages and other fabricated rebar by-products to fabricators, manufacturers, distributors, and construction companies. The company was founded in 1915 and is headquartered in Irving, Texas.

Mueller Water Products, Inc. manufactures and markets products and services for the transmission, distribution, and measurement of water used by municipalities, and the residential and non-residential construction industries in the United States, Israel, and internationally. It operates in two segments, Water Flow Solutions and Water Management Solutions. The Water Flow Solutions segment provides valves for water systems, such as iron gate, butterfly, tapping, check, knife, plug, and ball valves, which are used to control distribution and transmission of potable water and non-potable water, as well as in water transmission or distribution, water treatment facilities, or industrial applications. It also offers service brass products. The Water Management Solutions segment offers dry-barrel and wet-barrel fire hydrants for water infrastructure development; fire protection systems, and water infrastructure repair and replacement projects; pipe repair products, such as couplings, grips, and clamps used to repair leaks; residential, fire protection, and commercial water metering products and systems; water leak detection and pipe condition assessment products and services; machines and tools for tapping, drilling, extracting, installing, and stopping-off; gas valve products for use in gas distribution systems; and intelligent water solutions, including pressure control valves, advanced pressure management, network analytics, event management, and date logging. It sells its products under the Canada Valve, Centurion, Ez-Max, Hydro Gate, Hydro-Guard, HYMAX, HYMAX VERSA, Jones, Krausz, Milliken, Mueller Systems, Mueller, Pratt, Pratt Industrial, Repamax, Repaflex, Singer, Echologics, Echoshore, ePulse, Hersey, LeakFinderRT, Sentryx, and U.S. Pipe Valve and Hydrant brands. The company was founded in 1857 and is headquartered in Atlanta, Georgia.

Kaiser Aluminum Corporation, together with its subsidiaries, engages in manufacture and sale of semi-fabricated specialty aluminum mill products in the United States and internationally. It offers rolled, extruded, and drawn aluminum products used for aerospace and defense, aluminum beverage and food packaging, automotive and general engineering products. The company's automotive extrusions include extruded aluminum products for structural components, crash management systems, anti-lock braking systems, and drawn tubes for drive shafts, as well as offers fabrication services, including sawing and cutting to length. Its packaging products consist of bare and coated 3000- and 5000-series alloy aluminum coil used for beverage and food packaging industry. In addition, the company's general engineering products comprise alloy plate, sheet, rod, bar, tube, wire, and standard extrusion shapes used in various applications, including the production of military vehicles, ordnances, semiconductor manufacturing cells, electronic devices, after-market motor sport parts, tooling plates, parts for machinery and equipment, bolts, screws, nails, and rivets. Further, its rerolled, extruded, drawn, and cast billet aluminum products used for industrial end uses. The company sells its products directly to customers through sales personnel located in the United States, Canada, Western Europe, and China, as well as through independent sales agents in other regions of Asia, Latin America, and the Middle East. Kaiser Aluminum Corporation was founded in 1946 and is headquartered in Franklin, Tennessee.

Olympic Steel, Inc. processes, distributes, and stores metal products primarily in the United States, Canada, and Mexico. It operates in three segments: Carbon Flat Products; Specialty Metals Flat Products; and Tubular and Pipe Products. The company offers stainless steel and aluminum coil and sheet products, angles, rounds, and flat bars; alloy, heat treated, and abrasion resistant coils, sheets and plates; coated metals, including galvanized, galvannealed, electro galvanized, advanced high strength steels, aluminized, and automotive grades of steel; commercial quality, advanced high strength steel, drawing steel, and automotive grades cold rolled steel coil and sheet products; hot rolled carbon comprising hot rolled coil, pickled and oiled sheet and plate steel products, automotive grades, advanced high strength steels, and high strength low alloys; tube, pipe, and bar products, including round, square, and rectangular mechanical and structural tubing; hydraulic and stainless tubing; boiler tubing; carbon, stainless, and aluminum pipes; valves and fittings; and tin mill products, such as electrolytic tinplate, electrolytic chromium coated steel, and black plates. The company also provides cutting-to-length, slitting, shearing, blanking, tempering, stretcher-leveling, plate and laser processing, forming and machining, tube processing, finishing, and fabrication services, as well as value-added services, such as saw cutting, laser cutting, beveling, threading, and grooving services. It serves metal consuming industries, such as manufacturers and fabricators of transportation and material handling lift equipment, construction, mining and farm equipment, agriculture equipment, storage tanks, environmental and energy generation equipment, automobiles, food service, and electrical equipment, as well as general and plate fabricators, and metals service centers through direct sales force. Olympic Steel, Inc. was founded in 1954 and is based in Highland Hills, Ohio.

Ampco-Pittsburgh Corporation, together with its subsidiaries, engages in manufacture and sale of specialty metal products and customized equipment to commercial and industrial users worldwide. The company operates through Forged and Cast Engineered Products (FCEP); and Air and Liquid Processing (ALP) segments. The FCEP segment produces forged hardened steel rolls, cast rolls and, forged engineered products that are used in cold rolling mills by producers of steel, aluminum, and other metals; cast rolls for hot strip mills, medium/heavy section mills, roughing mills, and plate mills; and forged engineered products for narrow and wide strip and aluminum mills, back-up rolls for narrow strip mills, and leveling rolls and shafts. The ALP segment produces custom-engineered finned tube heat exchange coils and related heat transfer products for various industries, including OEM/commercial, nuclear power generation, and industrial manufacturing; custom-designed air handling systems for institutional, pharmaceutical, and general industrial building markets; and manufacture centrifugal pumps for the fossil fueled power generation, marine defense, and industrial refrigeration industries. Ampco-Pittsburgh Corporation was incorporated in 1929 and is headquartered in Carnegie, Pennsylvania.