Diamond Manufacturing Company
Perforated and Value Added Metal Specialists

Quality Control, Testing & Inspection

Diamond Exceeds the Industry Standards for Quality

From its founding in 1915, Diamond has always placed an emphasis on delivering top quality perforated products and services to its customers. That tradition of excellence continues today as our Quality is Guaranteed on every project and program:

  • Produced with defect-free, highest-grade materials
  • Carefully handled by our teams of expert metalworkers
  • Maintain extremely tight tolerances
  • Processed according to safety standards
  • Minimize waste and optimize material use
  • Priced competitively
  • Delivered on time
Quality guaranteed

Quality tooling

Quality precision

Quality in focus: 0.23% rejection rate

But don’t just take our word for it. Diamond was the first perforator in North America with a quality management system certified to ISO 9001. Plus, we’ve added a couple more independently verified certifications along the way.

Our customers leave us rave reviews. They tell us that “they can always Depend on Diamond.”

Our people and our processes are the reasons why we have a proven record of supply product that is accepted 99.7% of the time... Our quality rejection rate remains at a low 0.23%!

You can be assured that quality checks are part of every Diamond process and operation completed at each station. We can confidently claim that Diamond offers and achieves tolerances that surpass industry standards.

Certifications

Need assistance with your project?

Customer service coordinator

Call or email our customer service coordinator to connect today.


800-233-9601

info​@diamondman.com

GET A QUOTE

In our industry, applying and being reviewed for particular certifications is vital in ensuring two key factors. First, that we are doing our job with excellence, skill, knowledge, safety and quality according to verifiable external guidelines. Second, that our customers recognize us as a trustworthy, reliable partner that provides superior service.

These certifications listed below represent Diamond’s continued commitment to improve our processes and services to deliver the highest quality products, produced under exacting specifications, achieving shorter lead times and representing preferred pricing.

Need assistance with your project?

Customer service coordinator

Call or email our customer service coordinator to connect today.


800-233-9601

info​@diamondman.com

GET A QUOTE

Best Practices and the 5S System

5S System

By implementing an efficient 5S system, Diamond has been able to create and maintain a clean, orderly and disciplined work environment. We have embraced the best practices of the 5S system and it contributes to our quality and daily processes:

  1. Sort. Sort through all tools, equipment, fixtures, and materials.
  2. Set in order. Sort through remaining items and determine how they will be organized.
  3. Shine. Proactively clean work areas and regularly perform equipment maintenance.
  4. Standardize. Create a standardized operating procedure for 5S tasks.
  5. Sustain. And maintain.

Additionally, 5S encourages the elimination of unnecessary items in the workspace and on the production floor, which contributes to an increase in productivity. The 5S method promotes a clean working environment which helps to reduce work-related injuries and aids in making the workplace a safe environment.

5S SYSTEM

5S System

Organized shelving

Whiteboard

Diamond Manufacturing Company

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

Reliance Steel & Aluminum Co.

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Site designed and developed by Blair Inc.