In the highly competitive world of industrial server and GPU chassis manufacturing, precision and reliability are non-negotiable. A chassis is not just a protective shell; it is the foundation for housing mission-critical components such as GPUs, CPUs, and storage devices. A minor flaw in fabrication or assembly can compromise airflow, stability, or performance, leading to costly downtime. That is why at OneChassis, we have made quality control the cornerstone of our operations.

Our commitment to consistent quality is underpinned by Standard Operating Procedures (SOPs) and Standard Inspection Procedures (SIPs) that govern every step of our manufacturing flow. From material sourcing to packaging, these processes ensure that each chassis meets exacting standards before it reaches our customers in more than 100 countries worldwide.

About OneChassis

A decade ago, OneChassis founded and has grown into a trusted global supplier of ITX, NAS, GPU server, wall-mount, and rackmount chassis. Our factory, spanning 8,000 square meters, is home to 95 dedicated employees, including skilled engineers and a professional QC department. Equipped with 10 CNC machines, 12 punching systems, advanced wire-cut EDM equipment, three assembly lines, and two warehouses, we have the infrastructure to support both high-volume production and highly customized OEM/ODM projects.

Serving partners across industries—from data centers and AI companies to system integrators—our reputation is built on a combination of engineering expertise, advanced facilities, and uncompromising quality control systems.

The Manufacturing Flow: From Concept to Completion

1. Design & Engineering 

Every project begins with collaboration. Our engineering team works closely with customers to translate technical requirements into detailed CAD drawings and prototypes. This step ensures alignment with specifications and lays the foundation for manufacturability.

2. Material Procurement & Preparation 

High-grade SGCC steel and other metals are sourced from vetted suppliers. Before entering production, raw materials undergo incoming quality checks for thickness, tensile strength, and surface finish. This step prevents defects from entering the workflow.

3. CNC Machining & Sheet Metal Processing 

Precision is key. Using CNC systems and wire-cut EDM technology, we execute cutting, drilling, and shaping tasks with accuracy measured in fractions of a millimeter. Our stamping and bending machines handle repetitive tasks with efficiency, while strict SOPs ensure operators follow calibrated programs.

4. Assembly Lines 

Once components are processed, they move to one of our three assembly lines. Here, technicians follow detailed SOPs covering screw torque, cable management, and component alignment. For sensitive or confidential projects, we also operate a dedicated confidential assembly line to safeguard proprietary designs.

5. Testing & Verification 

Assembly is only the beginning. Each chassis undergoes multiple functional and structural tests to verify airflow design, rigidity, and compatibility with GPUs, motherboards, and cooling systems. SIP checklists ensure no detail is overlooked.

6. Packaging & Warehousing 

Finally, products are packaged in either neutral or custom-branded boxes, with protective materials preventing transit damage. Finished goods are stored in two well-organized warehouses, allowing for quick fulfillment of both bulk and urgent orders.

SOP: The Backbone of Consistency

Standard Operating Procedures are the documented instructions that ensure consistency in how tasks are performed across shifts, teams, and projects. At OneChassis, SOPs cover everything from machine calibration to daily maintenance and safety protocols.

• CNC Machining SOPs define program input procedures, tool maintenance intervals, and emergency shutdown steps.
• Punch Press SOPs specify lubrication cycles, safety guard checks, and operator positioning to reduce wear and improve output quality.
• Assembly SOPs include checklists for torque settings, grounding wire placement, and label application to ensure uniformity across thousands of units.

By standardizing processes, we eliminate variability and reduce the chance of human error, giving customers predictable results with every order.

SIP: Inspection at Every Stage

While SOPs control how work is performed, Standard Inspection Procedures ensure that results meet the required quality benchmarks.

• Incoming Inspection: Every batch of raw material is sampled for dimensional accuracy, hardness, and finish. Non-conforming materials are rejected before they can affect production.
• In-Process Inspection: During machining, operators and QC staff measure tolerances using calipers, micrometers, and gauges. Defects are identified in real-time, preventing rework at later stages.
• Final Inspection: Before packaging, every chassis is reviewed for both functional and cosmetic criteria: paint quality, structural stability, compatibility checks, and surface flatness.
• Mold Maintenance Inspection: Our stamping molds follow A/B/C maintenance cycles, ensuring longevity and dimensional stability. Regular maintenance avoids wear that could compromise accuracy.

By embedding inspections throughout the production process, we ensure that defects are caught early and that only compliant products move forward.

Continuous Improvement Culture

At OneChassis, quality is not a static target but a process of continuous refinement. Beyond SOPs and SIPs, we integrate feedback loops into our daily operations.

• Safety & Quality Meetings: Teams meet regularly to discuss incidents, near misses, or quality deviations.
• Root Cause Analysis: When issues arise, cross-functional teams identify the root cause and implement corrective actions.
• Preventive Maintenance: Machines are calibrated and serviced on a strict schedule to ensure reliability.
• Employee Training: Staff members receive ongoing training in new tools, updated SOPs, and customer-specific requirements.

This culture of continuous improvement not only enhances product quality but also increases efficiency, reduces waste, and shortens lead times.

What This Means for Our Customers?

For customers around the globe, the impact of SOPs and SIPs at OneChassis translates into tangible benefits:

• Reliability: Every chassis is manufactured and inspected under consistent conditions, reducing the risk of failures in the field.
• Faster Turnaround: Clear procedures and efficient inspections minimize bottlenecks and enable timely deliveries.
• Customization Confidence: Even in OEM/ODM projects with unique specifications, our processes guarantee alignment with standards.
• Cost Savings: Fewer defects and returns mean lower total cost of ownership for clients.
• Global Trust: With a proven track record in over 100 countries, customers can rely on our professional approach.

Quality is not a matter of chance—it is the result of discipline, expertise, and proven processes. At OneChassis, our SOPs and SIPs form the backbone of every project, ensuring that whether you order one prototype or thousands of units, you receive products that meet the highest standards of durability, precision, and performance. By investing in advanced machinery, skilled people, and rigorous procedures, we deliver on our promise: consistent quality you can trust, every time.