Hardware & fasteners

Maker of Delta-Protekt/Delta-Tone zinc-flake fastener coatings; one of two dominant licensed systems.

Maker of Geomet/Dacromet zinc-flake fastener coatings; the other dominant licensed system.

World's largest steel company by production (~130M MT in 2023, 40% larger than second-place ArcelorMittal). State-owned enterprise (central SOE). Formed from merger of Baosteel + Wuhan Iron & Steel (2016), then absorbed Magang (Masteel) in 2019, Taiyuan Iron & Steel (2021). Major wire rod producer across multiple subsidiaries.

Swiss-UK commodity trading and mining company (LSE: GLEN, HQ Baar, Zug Switzerland; ~$250B revenue); world's largest zinc producer by combined mining and trading operations. Glencore's zinc mining assets include: Mount Isa (Queensland Australia — one of the world's largest underground zinc-lead-silver mines), Lady Loretta (Queensland), Antamina (Peru — joint venture), and multiple other mines. Glencore also markets zinc concentrate from third-party miners through its commodity trading arm. Glencore's business model — combining mine ownership with commodity trading intelligence — gives it unique market positioning: it both produces zinc and trades the global zinc supply, enabling it to influence prices and allocations in ways that pure miners or pure traders cannot. Glencore is also the world's largest coal exporter and a major cobalt producer (Katanga, DRC) — the same Swiss trading house that mines zinc for galvanizing irrigation pipes also mines the cobalt in EV batteries and the coal that generates electricity for steel mills that process galvanized steel.

Korea Zinc Co., Ltd. (Seoul; KRX: 010130; ~$9B revenue) is the world's largest single-site zinc, lead, and silver smelter operator and the world's largest non-Chinese indium refiner. Indium is recovered as a byproduct at its Onsan smelter in Ulsan, South Korea — the only facility in Korea with an indium processing line. Korea Zinc produces ~150 tonnes of indium annually at 99.999% purity (vacuum-packed 5-kg bars), meeting roughly 11% of global demand outside China. About 90% of Korea Zinc's indium output is exported to the US, Japan, and Taiwan — making it the primary indium supplier for US and Taiwanese display/semiconductor manufacturers seeking non-Chinese supply. The Onsan smelter also produces gallium and antimony; Korea Zinc has invested heavily to diversify into critical minerals as a strategic counterweight to Chinese dominance.

Teck Resources Limited (Vancouver; NYSE: TECK; ~$9B revenue) is one of the world's largest integrated zinc producers and a major Western indium producer. Indium is recovered as a byproduct at Teck's Trail Operations in Trail, British Columbia — one of the largest integrated zinc and lead smelting complexes in the world. Teck produces 99.995%-minimum-purity indium at Trail with an annual capacity of approximately 75 tonnes, representing ~22% of US import supply. Teck has expanded its indium processing capability to meet ITO manufacturer demand. Trail Operations processes zinc concentrates from Teck's Red Dog mine (Alaska) and third-party sources. Teck sold its steelmaking coal business to Glencore in 2024, sharpening its focus on copper and zinc — both critical mineral supply chains.

China's largest private steel company; one of the world's largest wire rod producers. Based in Zhangjiagang, Jiangsu. Produces ~44 MT of steel/year including very large volumes of wire rod and bar for domestic construction and export. Vertically integrated with sea port access via Yangtze River at Zhangjiagang.

World's #2 steel producer; operates 3 US coke plants (as part of integrated steel mills in Indiana) that produce coal tar as a mandatory byproduct of the coking process. Coal tar is the raw material for creosote (railroad tie preservative). ArcelorMittal entered long-term coal tar supply agreements with Koppers Holdings through 2026. While ArcelorMittal does not make railroad ties, it is a critical upstream input supplier for the creosote that treats them. The 3 ArcelorMittal coke plants at Indiana Harbor (East Chicago IN), Burns Harbor (Portage IN), and Cleveland OH are primary US coal tar sources for the railroad industry.

Largest Latin American steel company; dominant wire rod and bar producer in the Americas. NYSE/B3 listed. Operates EAF steelmills in Brazil, US, Canada, Mexico, Argentina, Peru. US operations include wire rod at Cartersville GA (long products). A major supplier to construction, automotive, and fastener markets across the Americas.

Nyrstar NV (Balen, Belgium; subsidiary of Trafigura since 2019) is one of the world's largest zinc smelting groups, operating multiple European zinc smelters that collectively produce indium as a byproduct. Nyrstar's Critical Minerals Recovery program recovers indium across three European smelters: Balen/Pelt (Belgium), Budel (Netherlands), and Auby (France). Nyrstar's Budel zinc smelter — the largest zinc smelter in the Netherlands — was placed on care and maintenance in January 2024 due to high European energy costs, then restarted at reduced capacity in May 2024. Balen (Belgium) is the largest-capacity single Nyrstar site. Nyrstar's combined indium output is modest relative to Asian producers; however, it represents critical European indium supply for domestic ITO manufacturers.

Chinese state-owned steel company; #2 global forged rail wheel producer behind Nippon Steel/Standard Steel (by some market research measures). Produces AAR-compliant forged steel wheels that are technically approved for use in North America — however, Class I railroads face significant institutional, commercial, and political pressure not to use Chinese wheels despite technical compliance. Masteel also produces H-section steel beams, wire rod, and other structural steel products. The existing concentration claim in the DB notes 'Masteel ranked #2 globally' but Standard Steel's sole-qualified domestic position and Buy America-adjacent procurement norms effectively block Masteel from the North American market.

Charlotte, NC-based steel company (NYSE: NUE); largest US steel producer by volume; all EAF (electric arc furnace) production. Plate Mill Group: three facilities — Hertford County (Cofield) NC, Brandenburg KY, Tuscaloosa AL. Combined ~3.5 million tons/year plate capacity (cut-to-length and discrete plate). Products: carbon, HSLA, alloy, and pressure vessel-quality steel plate. Markets served include heavy equipment, dump bodies, on-highway trucks, rail cars, barges, ships — fire apparatus structural steel falls in this category. Buy America compliance: all domestic EAF production qualifies. Nucor also owns David J. Joseph (scrap procurement) and various downstream fabricators. Largest US recycled-content steel producer.

Austrian steel and technology group; world leader in high-quality wire rod for automotive applications (valve springs, suspension springs, tire cord). voestalpine Draht GmbH in Leoben-Donawitz produces the spring steel wire rod that goes into virtually every European and many US/Japanese automotive valve springs. NYSE-listed ADR; Vienna Stock Exchange.

Japanese integrated steel and engineering company (TSE: 5406, HQ Kobe, Hyogo; ~¥2.3T revenue); Machinery Business division produces brazed aluminum heat exchangers (BAHX) for LNG liquefaction and air separation. KOBE Steel was the subject of a 2017 global scandal when it admitted fabricating quality inspection data on steel, aluminum, and copper products sold to automotive, aerospace, and nuclear plant customers for over a decade. Despite the quality data scandal, KOBE Steel's BAHX division has maintained its position as a qualified ASU heat exchanger supplier — because BAHX qualification is so difficult and time-consuming that customers have limited alternatives. KOBE Steel's BAHX are installed in major LNG liquefaction plants (Qatargas, Australia LNG) and industrial gas ASUs worldwide. The same company that falsified quality data on aerospace aluminum parts still makes the heat exchangers inside cryogenic oxygen and nitrogen plants.

Japan's largest and world's #3 steel producer; parent of Standard Steel LLC (the only North American forged rail wheel producer, acquired 2011). Also blocked from acquiring US Steel Corporation (Biden administration denied in January 2025 on national security grounds). The irony: US regulators blocked Nippon Steel from buying a general US steel company for 'national security' reasons, while Nippon Steel already wholly owns the company that provides 100% of the forged steel wheels for US freight railcars — a product with no domestic alternative. Nippon Steel is also a major rail producer for Japanese and global markets.

South Korean integrated steel producer; world #4 (37.79M MT in 2024). Pohang and Gwangyang steelworks. Produces structural steel plate (KS D 3515 equivalent to S355/S460). Supplies Korean shipbuilders, offshore structures, and heavy machinery makers. Also entering lithium and secondary battery materials as strategic pivot.