Diamond Manufacturing Co

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Diamond Manufacturing Co is a full service distributor of various carbon steel, stainless steel, aluminium and plastics products, specializing in perforated metals. Based in Wyoming, PA, United States, the company operates as a subsidiary of Reliance Steel & Aluminium Co.


  • 243 West Eighth Street  

Town, State, Country

  • Wyoming, PA, United States  


  • 18644 

Postal address

  • PO Box 4174, Wyoming, PA  
  • Chief Executive Officer Rusty Flack


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