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Diamond Manufacturing Company Employee Directory

Fabricated Metal ProductsPennsylvania, United States51-200 Employees

Diamond Manufacturing Company operates in the fabricated metal products sector, focusing on precision perforation of metal and related fabrication. It serves as a single-source supplier from material to finished product, addressing the needs of volume OEM buyers, local job shops, and architects, with operations across six locations in the United States. The company is a wholly owned subsidiary of Reliance Steel & Aluminum, aligning it with North America’s largest metals-solutions provider. Based in Wyoming, Pennsylvania, the operation reflects a mid-sized manufacturing profile.

In October 2022, Diamond Manufacturing expanded its Wyoming facility by adding a 30,000-square-foot production space, broadening its manufacturing capacity. The company maintains a website at diamondman.com.

Find Diamond Manufacturing Company employees' phone numbers or email addresses

Diamond Manufacturing Company Global Highlights

Location
Employees

North America
117

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  • United States Of America
    117

Asia
10

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  • India
    10

Europe
1

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  • United Kingdom Of Great Britain And Northern Ireland
    1

Diamond Manufacturing Company's Leadership

  • Chief Executive Officer at Diamond Manufacturing Company
    M. N.
    Chief Executive Officer
    Mobile Phone
  • President at Diamond Manufacturing Company
    D. H.
    President
    Mobile Phone
  • President at Diamond Manufacturing Company
    L. M.
    President
    Mobile Phone
  • Owner at Diamond Manufacturing Company
    G. M.
    Owner
    Mobile Phone
  • Owner at Diamond Manufacturing Company
    J. C.
    Owner
    Mobile Phone
  • Owner at Diamond Manufacturing Company
    J. A.
    Owner
    Mobile Phone
  • Owner at Diamond Manufacturing Company
    K. H.
    Owner
    Mobile Phone
  • Vice President at Diamond Manufacturing Company
    B. W.
    Vice President
    Mobile Phone

Diamond Manufacturing Company Employee Metrics

100%
50%
0%
2026
2025
  • Sales
  • Administrative
  • Business
  • Purchasing
  • Supply Chain
  • Other

Contact profiles from Diamond Manufacturing Company

Name
Title
Contact
Location
Last Update
  • President at Diamond Manufacturing Company
    D. H.
    President
    Mobile Phone
    Oct 22, 2024
  • Owner at Diamond Manufacturing Company
    G. M.
    Owner
    Mobile Phone
    Oct 18, 2024
  • Owner at Diamond Manufacturing Company
    J. C.
    Owner
    Mobile Phone
    Oct 22, 2024
  • Owner at Diamond Manufacturing Company
    J. A.
    Owner
    Mobile Phone
    Oct 21, 2024
  • Owner at Diamond Manufacturing Company
    K. H.
    Owner
    Mobile Phone
    Oct 21, 2024
  • President at Diamond Manufacturing Company
    L. M.
    President
    Mobile Phone
    Oct 22, 2024
  • Chief Executive Officer at Diamond Manufacturing Company
    M. N.
    Chief Executive Officer
    Mobile Phone
    Oct 22, 2024
  • Vice President at Diamond Manufacturing Company
    B. W.
    Vice President
    Mobile Phone
    Oct 21, 2024
  • Managing Director at Diamond Manufacturing Company
    C. V.
    Managing Director
    Mobile Phone
    India, Gujarat
    Mar 04, 2026
  • Sales Manager at Diamond Manufacturing Company
    A. D.
    Sales Manager
    Mobile Phone
    Oct 17, 2024

Frequently Asked Questions

What is Diamond Manufacturing Company known for?

Minus sign iconPlus sign iconDiamond Manufacturing Company was founded in 1915 and operates in the Fabricated Metal Products industry. You can contact Diamond Manufacturing Company's main corporate office by phone at
+1-800-831-****
. Explore Diamond Manufacturing Company's company overview page for more information.

What is Diamond Manufacturing Company's most common email format?

Minus sign iconPlus sign iconDiamond Manufacturing Company employees' email format typically follows the pattern of FLast@diamondman.com. Trying to find reliable and up-to-date employee contact data? Find more Diamond Manufacturing Company email formats with LeadIQ.

How many employees does Diamond Manufacturing Company have currently?

Minus sign iconPlus sign iconDiamond Manufacturing Company has approximately 135 employees as of August 2026. These team members are located across 3 continents, including North America, Asia and Europe.

Who are Diamond Manufacturing Company's key employees and leadership?

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As of August 2026, Diamond Manufacturing Company's key employees include:

  • Chief Executive Officer: M. N.
  • President: D. H.
  • President: L. M.
  • Owner: G. M.
  • Owner: J. C.

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