A global standard for quality management systems focusing on continuous improvement and customer satisfaction.

ISO 9001:2015

Indicates that products are manufactured in the United States, meeting federal guidelines for domestic origin claims.

Made in USA (Domestic Manufacturing)

A qualification for motor repair facilities to ensure safe and compliant repairs in hazardous or explosive environments.

CSA Hazardous Location Motor Repair Qualification

The design, manufacturing, and assembly of components and systems for passenger cars, commercial and off-highway vehicles, rail rolling stock, and emerging electric/Autonomous mobility platforms. High-volume production, IATF 16949 compliance, JIT supply chains, and continuous innovation ensure reliable powertrains, safety-critical systems, and cost-efficient delivery across a broad transportation landscape.

Automotive & Transportation

Diamond Manufacturing Company manufactures and assembles precision perforated metal components for automotive and transportation industries, supporting the production of vehicle systems and parts with high-quality fabrication and assembly services tailored to passenger cars, commercial vehicles, and emerging mobility platforms.

Involves the fabrication and assembly of electronic components, semiconductor devices, printed circuit boards, and advanced microelectronics, as well as the manufacture of supporting mechanical components such as casings, enclosures, and structural parts. Cleanroom processes, ESD controls, precision machining, and adherence to industry standards (e.g., IPC, JEDEC) are critical for achieving high-density, high-performance products in mass-market, specialized, and ancillary applications.

Electronics & Semiconductors

Diamond Manufacturing Company provides precision machining, fabrication, and assembly of perforated metal components used in electronics and semiconductor equipment, including casings, enclosures, and structural parts, ensuring compliance with industry standards and supporting high-performance electronic applications.

The design, fabrication, and assembly of diverse products across multiple end‐use industries or specialized, project‐based needs. Emphasis is on versatility, custom solutions, and broad expertise to handle unique or varied manufacturing projects outside of more narrowly defined sectors.

General Manufacturing

Diamond Manufacturing Company specializes in precision perforating, fabrication, and assembly of custom perforated metal products and components for diverse general manufacturing applications, supporting unique and varied project-based needs across multiple industries.

The design and production of large‐scale machinery, automation systems, and heavy equipment for industrial applications, where reliability and performance are paramount. Adherence to ISO, ANSI, and other applicable standards supports continuous operation under high‐stress conditions, with custom‐engineered systems often required.

Industrial Machinery & Heavy Equipment

Diamond Manufacturing Company engineers and fabricates precision perforated metal components and assemblies used in industrial machinery and heavy equipment, providing reliable and high-performance solutions for automation systems and large-scale industrial applications.

Turbines, generators, balance-of-plant systems, and infrastructure spanning fossil, nuclear, wind, solar, hydro, and energy-storage projects. IEC / UL performance standards, robust fabrication, and long-life reliability support global power demand and decarbonization goals.

Energy & Power Generation (inc. Renewables)

Diamond Manufacturing Company produces precision perforated metal parts and assemblies for energy and power generation equipment, including components for turbines, generators, and balance-of-plant systems, ensuring robust fabrication and long-life reliability in fossil, nuclear, and renewable energy sectors.

Heating, ventilation, air-conditioning, dehumidification, and industrial refrigeration systems that ensure precise climate control in commercial, industrial, and specialty facilities. AHRI / ASHRAE performance ratings, EPA refrigerant regulations, and energy-efficiency goals drive design and manufacturing requirements.

HVAC, Climate Control & Refrigeration

Diamond Manufacturing Company fabricates and assembles perforated metal components for HVAC, climate control, and refrigeration systems, delivering precision-engineered parts that meet performance standards for heating, ventilation, air-conditioning, and industrial refrigeration applications.

Diamond Manufacturing Company, founded in 1915 and headquartered in Wyoming, Pennsylvania, is North America's premier perforated and value-added metal specialist. As a wholly owned subsidiary of Reliance, Inc., Diamond operates six strategically located manufacturing facilities across the United States, including full-service perforating, fabricating, and finishing operations. The company boasts 500,000 square feet of production space, 56 perforating presses with capacities ranging from 20 to 500 tons, and a 4,000-plus tool room. Diamond specializes in perforating a wide variety of materials such as carbon steel, aluminum, stainless steel, and other alloys, offering over 4,000 patterns in stock. Their in-house engineering team collaborates closely with customers to design and prototype custom perforated products, ensuring high-quality, cost-effective solutions with ISO 9001:2015 certification. Diamond serves diverse industries including agriculture, automotive, aerospace, architecture, and medical, providing value-added services like custom packaging, quality control testing, and finishing processes. Their commitment to precision, customer satisfaction, and timely delivery is supported by advanced equipment and a talented workforce with decades of experience.

Headquarters and main manufacturing facility with extensive perforating and fabrication capabilities, including 56 presses ranging from 20 to 500 tons, a 4,000-plus tool room, and in-house engineering. Strategically located for proximity to major East Coast and Midwestern markets, enabling reduced shipping costs and expedited deliveries.

Diamond Manufacturing Headquarters

Full-service perforating and fabrication facility serving regional markets with advanced equipment and skilled workforce.

Diamond Manufacturing Michigan City Facility

Fully stocked inventory and quick-ship facility providing perforated metal products and value-added services.

Perforated Metals Plus

Ferguson Perforating Company

Ferguson Perforating Company New Castle

McKey Perforating

North America's leading perforated metal specialist offering custom engineering, fabrication, and finishing with six U.S. facilities and ISO 9001:2015 certification.

Diamond Manufacturing

Perforated Metal Fabrication & Engineering

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