Why Use Diamond About Us Locations Cedar Hill TX Charlotte NC Manchester TN Michigan City IN New Berlin WI Wyoming PA Customer Service Company News Sales Reps Request For Literature Download Specs Terms and Conditions

Michigan City IN Diamond Manufacturing Company 600 Royal Road Michigan City, IN 46360   Email: [email protected]   (800) 233-9601

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A 243 West Eighth Street, PO Box 4174, Wyoming, PA 18644 E [email protected] P 800•233•9601
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Diamond Manufacturing is a wholly owned subsidiary of Reliance Steel & Aluminum Co.