Diamond is a leading independently owned manufacturer of steel doors and frames. Leveraging state-of-the-art automated manufacturing operations and one of a kind machinery, Diamond caters to a wide spectrum of projects and custom order, from commercial ventures to advanced industrial uses.
Our manufacturing facility is home to a unique array of state-of-the-art machinery, meticulously designed to elevate production standards. Each piece of equipment is engineered for precision and efficiency, allowing us to create bespoke products tailored to our clients’ needs.
our facility specializes in expedited production and delivery, ensuring that our clients receive their products faster than ever. With streamlined processes and cutting-edge technology, we maintain exceptional quality while meeting tight deadlines.
quality is our cornerstone and exceptional customer experience is our mission. We utilize advanced technology and rigorous quality control measures to ensure that every product meets the highest standards. Our skilled team is dedicated to providing personalized service, guiding clients through every step of the process.
As the industry embraces smarter and more sophisticated structures, a valuable opportunity arises to improve compliance with evolving codes and standards that enhance safety, efficiency, and durability. To ensure the highest levels of quality and performance, Diamond is committed to rigorous product testing.
Doors & Frames manufactured in North America
Standard Specification — Positive Pressure Fire Test
Test Procedure & Acceptance Criteria — Prime Painted Steel Surfaces for Steel Doors & Frames
Recommended Practice — Hardware Reinforcing on Standard Steel Doors & Frames
Test Procedure & Acceptance Criteria — Physical Endurance for Steel Doors, Frames & Frame Anchors
Test Procedure & Acceptance Criteria — Factory Applied Finish Coatings for Steel Doors & Frames
Standard Specification — Cold Rolled Steel Sheets
Standard Practice — Steady-State Thermal Transmittance of Steel Door & Frame Assemblies
Standard Specification — Galvanized / Galvannealed
Manufacturing Tolerances — Standard Steel Doors & Frames