The Beginning – A Call from a Fortune 500

The call came from a procurement director at a Fortune 500 food manufacturer. They were building a new $200 million production facility – and had hit a roadblock.

"We need frames for conveyors, workstations, enclosures, and equipment supports that will pass USDA inspection. No corrosion. No hidden crevices where bacteria can grow. No rust particles that could contaminate product. Our current steel frames are failing after 18 months because of corrosion, and the replacement costs are killing us."

The challenge: Build a 100,000-square-foot production line with framing that would:

Meet USDA and FDA food-contact standards

Resist corrosion from high-pressure washdowns with caustic cleaning agents

Eliminate crevices where bacteria can harbor

Support heavy process equipment while remaining lightweight

Be reconfigurable as production recipes change

The Challenge – Why Standard Industrial Framing Doesn't Work in Food

Issue Why It Matters in Food Processing

Rust and corrosion Steel frames rust over time – rust particles contaminate food product

Crevice corrosion Moisture trapped in bolted joints creates bacteria harborage points

Welded joints Welded steel has crevices that are impossible to clean – FDA fail

Paint and coatings Coatings can chip, flake, and contaminate food

Difficulty to modify Production line changes require cutting and welding – downtime is costly

Our Solution – Food-Grade Aluminum Framing from the Ground Up

We proposed a completely different approach: purpose-built food-grade aluminum framing – designed specifically for sanitary environments.

Alloy Selection – Corrosion-Resistant 6063-T5 with Specialized Sealing

We used 6063-T5 aluminum with all surfaces anodized to AA25 – creating a hard, non-porous surface that resists the harsh cleaners used in food plants.

Food-Safe Design Features:

Design Element How It Works

Closed profile ends Prevents water and debris from entering the hollow profile

Crevice-free connections All joints use food-grade silicone gaskets – no gaps

Slotted mounting system Allows adjustment without drilling – eliminates crevices at fastener points

Angled top surfaces Prevents water pooling on horizontal surfaces

Smooth radius edges Eliminates sharp corners where bacteria can collect

Stainless steel hardware No galvanic corrosion – meets 3-A Sanitary Standards

Cleanability – Designed for "Hose-Down" Environments

Food processing lines are washed down with high-pressure hot water and caustic solutions multiple times per day. Our frames were tested for:

Chemical resistance (exposure to chlorinated cleaners, acid-based sanitizers)

Hot water resistance (80°C washdown temperatures)

Pressure resistance (1,000 PSI washdown nozzles)

Test Standard Our Performance

Chemical resistance 168 hours immersion in 5% NaOH solution No surface degradation

Hot water exposure 80°C, 1,000 hours No discoloration or corrosion

Salt spray ASTM B117, 1,000 hours No pitting or oxidation

The Execution – 100,000 Square Feet of Food-Grade Framing

Phase 1: Sanitary Design Engineering

Our engineers worked with the plant's food-safety team to review every connection point, joint, and surface for potential contamination risks.

"We brought in our food safety consultant to review the designs. They gave Jiangsu Dinghao's drawings a clean bill of health – something they've never done with a steel frame supplier."— Plant Project Manager

Phase 2: Fabrication in Thailand

All components were produced at our Thailand facility with extra steps for cleanliness:

Food-grade packaging – components sealed in clean bags, not loose

Stainless steel marking – ink markings replaced with laser engravings to eliminate contamination risk

Dedicated production line – no cross-contamination with non-food-grade products

Phase 3: Installation

Assembly was completed by our certified installation team in 6 weeks – fast, clean, and with zero disruption to existing operations.

The Results – Passed USDA Inspection on First Attempt

Metric Steel Alternative Our Aluminum Solution

Corrosion resistance Fails after 18 months No corrosion after 2 years

FDA/USDA compliance Mixed results 100% pass on first inspection

Ease of cleaning Hard-to-clean crevices Single-pass cleaning verification

Modification cost $500,000+ per production line change $100,000 – materials re-used

Expected frame lifetime 3-5 years 20+ years

The Customer's Words

"We've been replacing steel frames on our production lines every 3 years due to corrosion. The food-grade aluminum frames from Jiangsu Dinghao are showing zero signs of degradation after two years of daily washdowns. And the cleanability is a game-changer – our sanitation team can verify cleanliness in half the time. We're standardizing these frames across all new facilities."— Facilities Engineering Director, Fortune 500 Food Manufacturer

Why This Case Matters for Your Food-Processing Facility

Challenge Our Solution Outcome

Corrosion from daily washdowns AA25 anodized finish + stainless steel hardware Zero corrosion after 2 years

USDA/FDA compliance Crevice-free design, closed profiles, seamless joints First-inspection pass

Product contamination risk Non-porous surfaces, no paint flaking, no rust Zero contamination events

Production line changes Modular aluminum – 100% reusable 80% lower modification cost

Heavy process equipment 6005-T6 high-strength alloy Supports 2,000kg loads

Ready to Build a Food-Grade Production Line?

Whether you're in dairy, meat processing, beverages, or packaged foods – we have the food-grade aluminum framing solution that meets USDA, FDA, and 3-A Sanitary Standards.

No Rust, No Contamination – How Food-Grade Aluminum Framing Helped a Global Food Manufacturer Build a USDA-Compliant Production Line