Industrial Control Cabinet

500 units for a European machinery OEM — delivered in 20 days with consistent RAL 7035 finish across all batches.

The Client

A European industrial machinery OEM needed control cabinets to house electrical components for their production line equipment. The cabinets had to be durable, IP54 rated for dust and splash resistance, and cosmetically consistent — they would be visible on the factory floor alongside the client's own branded machinery.

The Challenge

The client's previous supplier had two recurring issues:

1. Color inconsistency. The powder coating was outsourced to a third-party shop. Different batches came back with slightly different shades of RAL 7035 (light grey) — some cooler, some warmer — making the cabinets look mismatched when installed side by side.

2. Delivery delays. The outsourced coating added 5-7 days of unpredictable lead time. Rush orders were impossible to accommodate because the coating shop had its own queue.

The client needed a supplier who could guarantee batch-to-batch color consistency and reliable 20-day lead times.

Our Solution

We proposed bringing the entire process — from flat sheet to powder coated finished product — under one roof. No outsourcing. No handoff points.

Manufacturing Process

Material: Q235 carbon steel, 1.5mm and 2.0mm thicknesses for structural rigidity.

Cutting: Fiber laser cut all panels, doors, and internal mounting plates. ±0.1mm precision ensured consistent fit-up during assembly.

Bending: CNC press brake formed panels with precise flange dimensions. Door panels required multi-step bending sequences to achieve clean, square corners.

Welding: MIG welded the cabinet frame for strength and rigidity. Door frames received TIG welding for cleaner appearance on visible seams.

Surface preparation: All parts went through our phosphating pre-treatment line — critical for powder coating adhesion and long-term corrosion resistance.

Powder coating: Applied RAL 7035 polyester powder at 80μm target thickness on our in-house automatic line. We ran all 500 units in a single production batch to guarantee exact color consistency — same powder lot, same oven, same cure cycle.

Assembly: Installed hinges, locks, mounting rails, and cable glands. Each cabinet received a function check before packing.

The Results

✅ 500 units delivered in 20 days — on schedule, one shipment.

✅ Perfect color consistency across all units — verified by spectrophotometer measurement (ΔE < 0.5).

✅ IP54 rating confirmed — passed dust and water spray testing.

✅ Zero quality rejections at client's incoming inspection.

✅ Client reordered 3 times — now a long-term repeat customer.

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