Contract Manufacturing
Precision Fabrication & Custom Process Systems for High Purity and Critical Applications
At Critical Systems, Inc., our Contract Manufacturing Division (CCMD) is built to take your most complex fabrication challenges and turn them into reliable, production-ready solutions. With over 25 years of experience supporting the world’s most advanced industries, CSI delivers precision-welded assemblies, custom control systems, and engineered sheet metal solutions for gas and chemical process systems—all manufactured to the strictest quality and purity standards.
Our capabilities span UHP orbital weldments, stainless steel and exotic alloy fabrication, and full design-build services for advanced control panels and enclosures. Whether you need repeat high-volume parts or a one-off, turnkey assembly, CSI brings deep engineering expertise, responsive support, and ultra-clean fabrication techniques to every project.
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Why Partner with CSI Contract Manufacturing?
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25+ years of precision manufacturing experience
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In-house UHP fabrication and orbital welding capabilities
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Dedicated team of engineers, designers, and welders
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Strict adherence to ISO 9001 quality control processes
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Fast turnaround times with competitive pricing for custom and volume orders
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Trusted by global leaders in semiconductors, life sciences, aerospace, and beyond
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Custom Design & Fabrication Services
Need a fully tailored solution? CSI provides design, prototyping, and manufacturing for specialized process control systems and safety components, including:
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Custom control panels for gas and chemical delivery
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Engineered safety systems and interlocks
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Exhausted enclosures for hazardous gas tool connections
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Modular assemblies for field installation or system integration
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Panel design with cutouts, cable routing, component layout, and labeling
We offer full CAD support and collaborative design reviews to ensure your equipment meets your footprint, function, and interface requirements.
Weldments & Fabricated Assemblies
CSI’s fabrication shop is equipped for both high-volume production and precision custom builds:
High Production Weldments
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Small-diameter tubing and manifold systems for clean gas delivery
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High repeatability and part-to-part consistency
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Ideal for OEM components and field-replaceable assemblies
Large Diameter Custom Weldments
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Engineered piping assemblies for exhaust, vent, or process lines
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Compatible with high-pressure or high-corrosion environments
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Built to meet customer-specific process flow and integration needs
Material Expertise
We work with a wide range of materials suited to high purity and corrosive environments:
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All grades of stainless steel, including 304, 316L, and 316L electropolished
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Hastelloy C22 or Alloy 22
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Inconel, Titanium, Copper, and custom alloy requests
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Development and qualification of orbital weld techniques for new or exotic materials
Built to Your Specs. Designed to Perform.
As a strategic partner for OEMs, fabs, and research organizations, CSI provides full-spectrum contract manufacturing services, from design to delivery. Our team specializes in:
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Tube and pipe weldments for UHP and hazardous gas and chemical delivery
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Custom process control systems with logic integration
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Sheet metal enclosures, panel work, and safety systems
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Development of specialized gas handling components to support cleanroom and corrosive environments
We collaborate closely with customers across industries including semiconductors, biotech, aerospace, and specialty chemicals to deliver solutions that meet the most demanding process, space, and purity requirements.
