Heavy-Duty System for Large Enclosures
Cabinet & Electrical Enclosure
Powder Coating Lines
Ketao designs heavy-duty powder coating lines for electrical cabinets, switchgear, outdoor enclosures and control panels.
Our systems handle large dimensions (up to 2.5×1.5×1.2 m), heavy weight (500–1000 kg per hanger) and meet
high corrosion resistance standards (C4–C5) for critical infrastructure.
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Robust overhead conveyor for 500-1000 kg -
C4–C5 corrosion resistance standard -
Stable film thickness on large flat panels -
Manual + automatic coating options
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Max Load Capacity
500-1000 kg per hanger
Corrosion Resistance
C4-C5 Standard
Real Customer Case: Algeria Cabinet Manufacturer
How a leading Algerian electrical cabinet manufacturer upgraded from manual coating to a Ketao automatic line
and achieved stable OEM quality for European export customers.
Algeria Electrical Cabinet OEM
Supplies to European distributors
The Challenge
The customer produced metal cabinets for industrial control systems with manual coating.
Their European buyers required stable film thickness (60–80 µm), high corrosion resistance (C4 standard, 720-hour salt spray),
and consistent surface quality across batches.
Problems with the manual line:
- • Film thickness varied 40–100 µm → rejection rate 25%
- • Operators struggled with large flat panels (uneven coverage)
- • Salt spray failures on edges and corners
- • Cannot scale production for new export orders
The Ketao Solution
Ketao designed a semi-automatic powder coating line with:
- • Heavy-duty overhead conveyor (600 kg per hanger capacity)
- • 7-stage pretreatment tunnel with iron phosphate conversion coating
- • Manual coating booth with 4 operator positions + gun parameter control
- • Gas-fired curing oven with ±3°C temperature uniformity
- • Powder recovery system to reduce cost
The Result
60-80 µm
Film thickness (±5 µm)
< 3%
Rejection rate
+40%
Output per shift
Customer Quote
"Ketao helped us move from manual guesswork to a controlled, stable process.
Our European customers now trust our quality, and we can accept larger orders with confidence.
The salt spray test results improved dramatically after the pretreatment upgrade."
— Production Manager, Algeria Cabinet OEM
Heavy-duty overhead conveyor with reinforced I-beam structure and precision drive system
for stable transport of large cabinets weighing 500-1000 kg.
Heavy-Duty Conveyor System for Large Cabinets
Standard powder coating lines handle parts up to 100-200 kg per hanger. Electrical cabinets and large enclosures
often exceed 500 kg per unit, requiring reinforced conveyor structure, larger hangers and more robust drive motors.
Ketao cabinet line conveyor features:
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Load capacity: 500–1000 kg per hanger (customized per project) -
I-beam structure: Reinforced steel I-beam track for stability under heavy load -
Precision drive: Inverter-controlled motor for smooth start/stop with heavy parts -
Custom hangers: Designed to match your cabinet dimensions and mounting holes -
Safety interlocks: Overload detection and emergency stop for operator safety
💡 Engineering Note
We calculate conveyor load based on your largest and heaviest cabinet + hanger weight + safety factor (1.5–2×).
Share your cabinet dimensions and weight for a properly sized system.
High Corrosion Resistance for Outdoor & Industrial Environments
Electrical cabinets and control enclosures are often installed outdoors or in harsh industrial environments.
Meeting C4 or C5 corrosion resistance standards requires both proper pretreatment and coating system design.
C2
Low Risk
Indoor, dry environments (offices, clean rooms)
Salt spray: 240 hours
C3
Medium
Indoor with occasional moisture, outdoor rural areas
Salt spray: 480 hours
C4
Common Target
Outdoor urban/industrial, coastal areas (>10km from shore)
Salt spray: 720 hours
C5
Very High
Coastal areas (<10km), heavy industrial pollution
Salt spray: 1000+ hours
How Ketao Achieves C4–C5 Corrosion Resistance
Proper pretreatment
Iron phosphate or zinc phosphate conversion coating for strong adhesion and corrosion resistance
Adequate film thickness
60–100 µm for C4, 80–120 µm for C5 (edges need extra attention)
Quality powder selection
Outdoor-grade powder with UV stability and corrosion inhibitors
Consistent process control
Stable line speed, gun settings and curing profile to avoid weak spots
Key Features of Ketao Cabinet Powder Coating Lines
Designed for large, heavy cabinets with high corrosion resistance and stable quality requirements.
Heavy-Duty Structure
Reinforced I-beam conveyor and robust hanger system for 500-1000 kg load capacity per station.
- ✓ Precision drive motor with inverter control
- ✓ Overload detection and safety interlocks
- ✓ Custom hanger design for cabinet dimensions
Advanced Pretreatment
Multi-stage spray or immersion pretreatment with iron or zinc phosphate conversion coating.
- ✓ Degreasing, rinsing, conversion, DI rinse stages
- ✓ Automated chemical dosing and monitoring
- ✓ C4-C5 corrosion resistance capability
Manual or Automatic Coating
Choose manual booth with multiple positions or automatic guns with reciprocators for repeatable quality.
- ✓ Gun parameter control (kV, µA, powder flow)
- ✓ Powder recovery system to reduce waste
- ✓ Quick color change options for multi-color plants
Large Curing Oven
Gas, diesel or electric oven with precise temperature control and sufficient size for large cabinets.
- ✓ Temperature uniformity ±3-5°C across oven
- ✓ Recipe management for different powder types
- ✓ Energy-efficient insulation and burner design
Control System
PLC + HMI for centralized control of line speed, gun settings, oven temperature and safety interlocks.
- ✓ Recipe storage for different cabinet models
- ✓ Alarm system for critical parameters
- ✓ Data logging for quality documentation
Custom Layout Design
We adapt the line configuration to your workshop dimensions, cabinet sizes and throughput targets.
- ✓ Straight, L-shape or U-shape layout options
- ✓ Future expansion possibilities
- ✓ Integration with existing factory flow
Who Uses Cabinet Powder Coating Lines?
Ketao cabinet lines are used by manufacturers of electrical enclosures, control systems and industrial equipment
who need large capacity, heavy-duty conveyor and high corrosion resistance.
Electrical Cabinets
Low-voltage & medium-voltage switchgear, distribution panels, control cabinets
Industrial Enclosures
Machine control enclosures, automation cabinets, industrial PC housings
Telecom Cabinets
Outdoor telecom enclosures, base station cabinets, street cabinets
Server Racks
Data center racks, network cabinets, server enclosures
Power Distribution
Transformer enclosures, power distribution boxes, meter cabinets
💡 Export-focused manufacturers: Our cabinet lines help OEMs meet international quality standards (C4–C5 corrosion resistance,
ISO surface quality) required by European and North American distributors.
Cabinet Powder Coating Line FAQ
Common questions from cabinet manufacturers about powder coating line design and specifications.
1. What is the maximum cabinet size your line can handle?
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For even larger enclosures or special dimensions, we can customize the booth, oven and conveyor accordingly.
2. Can your line meet C4 or C5 corrosion resistance standards?
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adequate film thickness (60-120 µm), outdoor-grade powder and stable process control.
We design the complete system to meet your target corrosion resistance level.
3. Should I choose manual or automatic powder coating for cabinets?
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and many cabinet models. Automatic guns with reciprocators are better for high volume and repeat production.
We can also design a hybrid system (automatic for large flat panels, manual touch-up for edges/corners).
4. How do you ensure uniform film thickness on large flat cabinet panels?
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adjust gun angle and stroke, optimize powder output and line speed, and sometimes add rotation or tilt mechanisms.
Proper training and gun parameter control are also critical for consistent results.
5. What information do you need to design a cabinet powder coating line?
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(3) corrosion resistance requirement (C2/C3/C4/C5); (4) workshop layout and available space;
(5) energy type preference (gas/diesel/electric). Cabinet photos and drawings are also very helpful.
Get Your Cabinet Line Proposal
Share your cabinet dimensions, production volume and corrosion resistance requirement.
Our engineers will design a heavy-duty powder coating line tailored to your needs.
Heavy-duty engineering support
Email: ketucoatingline@gmail.com
Related Equipment for Cabinet Coating Lines
Complete your cabinet powder coating line with these essential components.
Before Coating
Pretreatment Tunnel
Multi-stage spray tunnel with conversion coating
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7-11 stage options -
Iron or zinc phosphate -
Automated chemical control
During Coating
Powder Coating Booth
Manual or automatic booth with powder recovery
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Manual & automatic options -
Cyclone or cartridge filter -
Gun parameter control
After Coating
Curing Oven
Gas/diesel/electric oven for large cabinets
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180-220°C temperature range -
±3-5°C uniformity -
Recipe management system
Need a Complete Cabinet Coating Line?
Pretreatment + Coating Booth + Curing Oven + Conveyor
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