United States

Top 22 largest US Companies in the Metal Fabrication industry by Market Cap

This is the list of the largest public listed companies in the Metal Fabrication industry from the United States by market capitalization with links to their reference stock.

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Top Metal Fabrication Companies from the United States as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
1 Carpenter Technology Corporation $16.87 B United States US Industrials US Metal Fabrication
2 Allegheny Technologies Incorporated $16.43 B United States US Industrials US Metal Fabrication
3 Mueller Industries, Inc. $12.97 B United States US Industrials US Metal Fabrication
4 Valmont Industries, Inc. $8.13 B United States US Industrials US Metal Fabrication
5 Worthington Industries, Inc. $2.59 B United States US Industrials US Metal Fabrication
6 Proto Labs, Inc. $1.23 B United States US Industrials US Metal Fabrication
7 Ryerson Holding Corporation $829.7 M United States US Industrials US Metal Fabrication
8 Haynes International, Inc. $752.8 M

(July 1, 2024)

 United States US Industrials US Metal Fabrication
9 Insteel Industries, Inc. $629.3 M United States US Industrials US Metal Fabrication
10 Northwest Pipe Company $608.5 M United States US Industrials US Metal Fabrication
11 Mayville Engineering Company, Inc. $385.0 M United States US Industrials US Metal Fabrication
12 Mueller (PAUL) Co. $370.2 M United States US Industrials US Metal Fabrication
13 Liquidmetal Technologies, Inc. $88.1 M United States US Industrials US Metal Fabrication
14 Ampco-Pittsburgh Corporation $58.3 M

(July 1, 2025)

 United States US Industrials US Metal Fabrication
15 Elinx Corp United States US Industrials US Metal Fabrication
16 Chatham Corp United States US Industrials US Metal Fabrication
17 Federal Casters Corp United States US Industrials US Metal Fabrication
18 Thermodynetics, Inc. United States US Industrials US Metal Fabrication
19 CompoSecure, Inc. United States US Industrials US Metal Fabrication
20 Thresher Industries, Inc. United States US Industrials US Metal Fabrication
21 ESAB Corporation United States US Industrials US Metal Fabrication
22 Riviera Tool Co. United States US Industrials US Metal Fabrication

Top Metal Fabrication Companies from the United States as of Jan. 01, 2026

1. Carpenter Technology Corporation

Company Profile: Carpenter Technology Corporation
Market Cap (USD): $16.87 B
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

2. Allegheny Technologies Incorporated

Company Profile: Allegheny Technologies Incorporated
Market Cap (USD): $16.43 B
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

3. Mueller Industries, Inc.

Company Profile: Mueller Industries, Inc.
Market Cap (USD): $12.97 B
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

4. Valmont Industries, Inc.

Company Profile: Valmont Industries, Inc.
Market Cap (USD): $8.13 B
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

5. Worthington Industries, Inc.

Company Profile: Worthington Industries, Inc.
Market Cap (USD): $2.59 B
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

6. Proto Labs, Inc.

Company Profile: Proto Labs, Inc.
Market Cap (USD): $1.23 B
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

7. Ryerson Holding Corporation

Company Profile: Ryerson Holding Corporation
Market Cap (USD): $829.7 M
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

8. Haynes International, Inc.

Company Profile: Haynes International, Inc.
Market Cap (USD): $752.8 M (July 1, 2024)
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

9. Insteel Industries, Inc.

Company Profile: Insteel Industries, Inc.
Market Cap (USD): $629.3 M
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

10. Northwest Pipe Company

Company Profile: Northwest Pipe Company
Market Cap (USD): $608.5 M
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

11. Mayville Engineering Company, Inc.

Company Profile: Mayville Engineering Company, Inc.
Market Cap (USD): $385.0 M
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

12. Mueller (PAUL) Co.

Company Profile: Mueller (PAUL) Co.
Market Cap (USD): $370.2 M
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

13. Liquidmetal Technologies, Inc.

Company Profile: Liquidmetal Technologies, Inc.
Market Cap (USD): $88.1 M
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

14. Ampco-Pittsburgh Corporation

Company Profile: Ampco-Pittsburgh Corporation
Market Cap (USD): $58.3 M (July 1, 2025)
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

15. Elinx Corp

Company Profile: Elinx Corp
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

16. Chatham Corp

Company Profile: Chatham Corp
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

17. Federal Casters Corp

Company Profile: Federal Casters Corp
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

18. Thermodynetics, Inc.

Company Profile: Thermodynetics, Inc.
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

19. CompoSecure, Inc.

Company Profile: CompoSecure, Inc.
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

20. Thresher Industries, Inc.

Company Profile: Thresher Industries, Inc.
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

21. ESAB Corporation

Company Profile: ESAB Corporation
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

22. Riviera Tool Co.

Company Profile: Riviera Tool Co.
Country: United States
Sector: US Industrials
Industry: US Metal Fabrication

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