Diamond Manufacturing Company
Perforated and Value Added Metal Specialists

Industry Leading 99.77% Acceptance Rating

Diamond Manufacturing has a proven record of supplying product that is accepted 99.77% of the time. Adhering to strict internal audits, we offer tolerances that surpass industry standards, and we continue to improve our processes each day to meet the highest quality you demand. There are several production tolerances and options that pertain to perforated material and these depend on whether the material is produced into sheet, coil, or tube form. Simply contact us and we will work with you to get the tolerances and specifications you need. Diamond’s comprehensive quality control checks are tested and then retested throughout the entire process to ensure exacting measurements.

Diamond Manufacturing Company

Diamond Manufacturing is a wholly owned subsidiary of Reliance Steel & Aluminum Co.

Reliance Steel & Aluminum Co.

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Contact Us

Physical address:

243 West Eighth Street
Wyoming, PA 18644

Mailing address:

P.O. Box 4174
Wyoming, PA 18644

[email protected]


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