Powder Coated Enclosure Manufacturer & Supplier, Premium Powder Coating Services

Eterna Global Solutions
C-52 Block-C, Sector 80
Noida Uttar Pradesh,
201306, India

Powder Coating Services — Conveyorised Application & Curing for Sheet Metal Enclosures in India

Eterna Global Solutions LLP operates a conveyorised powder coating line at its Noida manufacturing facility, providing in-house surface finishing for sheet metal enclosures, server racks, telecom cabinets, battery housings, panels, brackets, and OEM assemblies. We source powder exclusively from premium global manufacturers — AkzoNobel Interpon, Asian Paints, and Jotun Coatings — giving our customers access to a wide colour selection, consistent batch-to-batch colour matching, and documented powder specifications for each production order.

Our coating line accepts parts up to 3,000 mm tall × 1,200 mm wide × 1,000 mm deep — large enough to coat a fully assembled 47U server rack in a single pass. Parts then move through the conveyorised powder booth where electrostatically charged powder is applied using quick-change spray guns that allow colour changeover in under 15 minutes — making short-run custom colours economically viable.

After coating, parts enter the curing oven at 180–200°C for 15–20 minutes, cross-linking the thermoset powder into a hard, durable finish with typical film thickness of 60–80 microns. Every batch is tested: DFT (dry film thickness) gauge checks at random points, cross-cut adhesion tests (per ISO 2409), and bend tests (per ISO 1519) to verify coating flexibility and bonding. Standard colour for server racks is RAL 7035 (light grey), telecom cabinets RAL 7032 (pebble grey), and battery enclosures RAL 7016 (anthracite grey) — with any RAL chart colour available on request.

Need powder-coated sheet metal parts or assemblies?
Send your requirements with RAL colour, quantity, and part dimensions — we quote coating within 24–48 hours.

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Powder coating overview

Prepare → coat → cure → inspect.

What is powder coating?

Powder coating is a dry finishing process where electrostatically charged polymer powder particles are sprayed onto a grounded metal surface, then heat-cured in an oven to form a hard, continuous film. Unlike liquid paint, powder coating contains no solvents, produces near-zero VOC emissions, and creates a thicker, more uniform, and more durable finish in a single application. It is the industry standard for sheet metal enclosures, server racks, and telecom infrastructure because it provides superior corrosion resistance, UV stability, scratch resistance, and colour consistency compared to wet paint.

How Eterna coats parts

Our process is fully conveyorised — parts move continuously through coating and curing on an overhead conveyor system, ensuring consistent process times, even heat distribution, and high throughput. Electrostatic spray guns apply the powder, and the curing oven cross-links the coating at controlled temperature. Quick-change equipment enables rapid colour switchovers with minimal downtime or cross-contamination between colours.

Why this matters for buyers: In-house conveyorised powder coating means your parts do not leave our Noida facility between welding/fabrication and coating. This eliminates transit damage, reduces lead time by 2–5 days vs. outsourced coating, and gives us full control over surface quality from bare metal to finished product.

Powder coating specifications at a glance

Quantified for vendor qualification.

3,000 mmMax part height

1,200 mmMax part width

1,000 mmMax part depth

60–80 µmStandard film thickness (DFT)

180–200°CCuring temperature

15–20 minCuring time

<15 minColour changeover time

Near-zero VOCSolvent-free process

3 suppliersInterpon • Asian Paints • Jotun

Full RAL chartAny RAL colour available

ConveyorisedContinuous overhead line

High throughputBatch + program runs

For procurement teams: Our booth dimensions (3,000 × 1,200 × 1,000 mm) accommodate fully assembled 42U/47U server racks, large telecom outdoor cabinets, and battery enclosure bodies in a single pass — no disassembly required for coating. Request a coating capability sheet at info@itiseterna.com.

Coating equipment (click to expand)

Conveyor • booth • guns • oven • recovery.

Overhead conveyor systemContinuous flow • coat to cure

Parts travel on an overhead monorail conveyor through coating, curing, and cool-down in a continuous flow. This reduces manual handling, improves consistency, and supports high throughput.

Part capacity: Up to 3,000 mm height × 1,200 mm width × 1,000 mm depth per hanging position
Line speed: Tuned per powder TDS and part mass to achieve correct metal temperature cure
Hanging density: Spaced for 360° powder access and uniform heat circulation during curing
Weight limit: Conveyor rated for assembled enclosures and rack bodies without disassembly

Electrostatic powder boothQuick-change • reclaim • controlled environment

The powder booth is a controlled, ventilated enclosure where electrostatic spray guns charge powder particles to 60–100 kV and direct them onto the grounded workpiece. Overspray is captured by the booth’s recovery system for reuse, minimising powder waste.

Quick-change system: Booth can be purged and switched to a new colour in under 15 minutes
Powder recovery: Cyclone + filter cartridge system recovers 95%+ of overspray for reuse
Booth ventilation: Filtered air supply reduces dust contamination during coating
Gun count: Multiple guns for large/complex geometry (Faraday areas handled by voltage tuning + positioning)

Curing oven180–200°C • thermostat controlled

The curing oven cross-links the thermoset powder into a hard, durable film. Temperature uniformity throughout the oven chamber is critical — uneven curing causes soft spots, colour variation, or reduced durability.

Temperature range: 180–200°C (set per powder manufacturer TDS)
Cure time: 15–20 minutes at metal temperature (heavier parts need longer ramp)
Monitoring: Oven profiling with data-logging thermocouples (target ±5°C uniformity)
Cool-down zone: Controlled cool to prevent handling marks on hot coating

Quick-change spray gunsRapid colour switch • electrostatic • uniform

Our electrostatic spray guns are designed for rapid colour changeover without cross-contamination. Each gun assembly can be purged, cleaned, and loaded with new powder in minutes, enabling multiple colours per shift.

Electrostatic charge: 60–100 kV corona charging for consistent adhesion
Adjustable settings: Voltage/current/flow tuned per geometry (Faraday effect handled)
Colour change speed: Under 15 minutes including purge + blow-out + booth wipe
Consistency: Film thickness controlled to target 60–80 µm, verified by DFT gauge

Capacity note: With conveyorised throughput, we handle both small batch orders (even 5–10 pieces in a custom colour) and high-volume production runs (500+ enclosures per month). Quick-change guns make custom colours practical even on short runs.

Powder coating process flow

Inspect → mask → coat → cure → inspect.

Incoming inspection & masking

Surface check • threaded holes protected • fixture points masked

Parts arriving from fabrication and welding are inspected for surface readiness: weld grinding quality, spatter removal, edge dressing, and overall cleanliness. Any surface defects that would show through the powder coat are flagged for rework before coating proceeds.

Threaded holes, tapped inserts, and mating surfaces masked with high-temperature silicone plugs or masking tape
Grounding points and electrical contact surfaces masked to maintain bare-metal conductivity
Parts hung on conveyor hooks for 360° powder coverage and even airflow during curing

Drying / surface readiness check

Ensure the part is dry • dust-free • ready for coating

Before powder application, parts are verified to be dry and free of loose dust. Any moisture can cause craters, pinholes, or adhesion issues in the cured film. Recessed areas, seams, and drain holes are checked carefully.

Critical areas inspected: corners, return flanges, drain holes, seams and lap joints
Clean handling practice maintained to avoid fingerprints and contamination on visible surfaces

Electrostatic powder application

Corona guns • 60–80 µm target • full coverage

Powder is applied in the controlled-environment spray booth using electrostatic corona guns. The operator adjusts voltage and flow rate per part geometry, with special attention to recessed areas where the Faraday cage effect can cause thin spots.

Target DFT: 60–80 µm standard (100–120 µm for outdoor/high-corrosion on request)
Powder charged to 60–100 kV — attracted uniformly to the grounded workpiece
Multiple passes on complex geometry: internal corners, return flanges, and deep recesses receive directed application
Overspray recovered by cyclone/filter system (95%+ recovery rate) for reuse

Curing at 180–200°C

Thermoset cross-linking • 15–20 min at metal temp

The coated parts enter the curing oven where heat melts the powder, flows it into a uniform film, and cross-links the thermoset resin into a hard, chemically resistant finish. Under-curing produces a soft, easily scratched coating. Over-curing can cause yellowing or brittleness.

Cure schedule set per powder manufacturer TDS: typically 180°C for 20 min or 200°C for 15 min at metal temperature
Metal temperature verified (not just air temperature) — heavy bodies take longer to reach target temp
Oven temperature uniformity maintained within ±5°C, verified by periodic profiling

Cool-down, de-masking, and final inspection

Visual + DFT + adhesion + bend tests per batch

After curing, parts cool in a controlled zone before handling. Masking is removed and each part undergoes final quality inspection before release to assembly or packing.

Visual inspection: 100% check for orange peel, pinholes, craters, fisheyes, shade variation, coverage in recesses
DFT measurement: Random parts per batch checked with calibrated DFT gauge
Cross-cut adhesion (ISO 2409): Rating must be 0 or 1 for pass
Bend test (ISO 1519): No cracking/delamination at specified bend radius
Any non-conforming parts reworked as per internal quality procedure

Process time: A typical enclosure goes from coated to fully cured, inspected powder coat in approximately 1–3 hours depending on part mass, hanging density, and colour changeover requirements.

Colours, textures, and powder suppliers

Premium powder • full RAL chart • multiple finishes.

Powder suppliers

We source powder exclusively from established, globally recognised manufacturers to ensure colour consistency, batch repeatability, and documented technical specifications:

AkzoNobel Interpon: Global leader in powder coatings. Interpon D-series (architectural), A-series (industrial), and speciality lines available.

Asian Paints (Apco Coatings): Reliable industrial colours with strong availability for standard production finishes.

Jotun Coatings: Known for industrial-grade durability and outdoor performance where corrosion resistance and UV stability are priorities.

Standard industry colours

RAL 7035 (Light Grey): Standard for 19″ server racks and IT infrastructure. Fine texture.

RAL 7032 (Pebble Grey): Common for telecom cabinets. Smooth or fine texture.

RAL 7016 (Anthracite Grey): Popular for battery enclosures and premium housings. Smooth semi-gloss.

RAL 9005 (Jet Black): A/V racks, broadcast equipment enclosures. Fine texture.

RAL 9003 (Signal White): Clean-room and medical housings. Smooth gloss.

Custom RAL: Any colour from the RAL Classic chart available on request (MOQ/lead time may apply).

Available textures and gloss levels

Fine texture (semi-matte): Most popular for enclosures — hides minor marks and fingerprints.

Smooth gloss (70–90 GU): Premium look; requires excellent surface prep.

Smooth semi-gloss (30–60 GU): Balanced finish for industrial products.

Sand texture (coarse): Rugged, scratch-hiding finish for heavy-duty applications.

Wrinkle / leatherette: Decorative textured finish for instrument panels and aesthetic applications.

Special-performance powders

Anti-microbial: For healthcare and hygiene-sensitive surfaces.

High-temperature: Silicone-modified powders rated to 250–400°C (application dependent).

Chemical-resistant: Epoxy-heavy formulations for solvent/chemical exposure.

Super-durable polyester: Enhanced UV-resistance for outdoor enclosures where long-term colour retention is required.

Colour matching: We can match to RAL, Pantone (closest RAL equivalent), NCS, or physical colour samples. For critical brand-colour matching, we recommend a spray-out sample panel for approval before production.

Quality testing and standards

Every batch tested • documented results.

Tests performed per batch

Dry Film Thickness (DFT): Measured with calibrated electromagnetic DFT gauge on random parts per batch. Target: 60–80 µm standard (or as specified).

Cross-cut adhesion test (ISO 2409): Tape pull adhesion rating must meet acceptance criteria (typically Class 0 or 1).

Bend test (ISO 1519): Coated test panel bent over mandrel to verify flexibility without cracking/delamination.

Additional tests (on request or per application)

Impact test (ISO 6272): Verifies resistance to mechanical impact without cracking.

Salt spray test (ISO 9227): Through third-party labs where certified reports are required.

Gloss measurement (ISO 2813): Confirms gloss level meets specification.

Colour verification (ΔE): For critical colour matching against approved reference panel.

Cure verification (MEK rub): Confirms proper cure after oven maintenance or first batch of a new powder.

Test documentation: Batch test results (DFT readings, adhesion rating, bend test pass/fail) are recorded and retained. If you require formal coating test reports with shipment, we can provide documented results as part of the delivery package.

Frequently asked questions

Powder coating process, colour, and quality queries.

What powder coating brands does Eterna use?+

We source powder from three premium manufacturers: AkzoNobel Interpon, Asian Paints / Apco Coatings, and Jotun Coatings. This gives buyers access to a wide range of colours, textures, and performance grades with consistent batch quality.

What is the maximum part size Eterna can powder coat?+

Our conveyorised powder coating line accepts parts up to 3,000 mm tall × 1,200 mm wide × 1,000 mm deep. This accommodates fully assembled 42U and 47U server racks, large telecom cabinets, and battery enclosure bodies in a single pass.

What film thickness does Eterna apply?+

Standard dry film thickness (DFT) is 60–80 microns for indoor and general industrial applications. For outdoor and high-corrosion environments, we can apply 100–120 microns on request. DFT is verified with calibrated gauges on random parts per batch.

What quality tests does Eterna perform on powder-coated parts?+

Every batch: DFT gauge, cross-cut adhesion (ISO 2409), and bend test (ISO 1519). Additional tests on request include impact (ISO 6272), salt spray (ISO 9227), gloss (ISO 2813), colour ΔE verification, and MEK rub cure checks.

Can Eterna coat in custom RAL colours?+

Yes. Any RAL Classic colour is available on request. Standard colours like RAL 7035, 7032, 7016, 9005, and 9003 are commonly used for enclosures and can be planned quickly. We can also provide spray-out sample panels for approval before production.

How quickly can Eterna switch between powder colours?+

Our quick-change spray equipment allows colour changeover in under 15 minutes including purge and booth wipe-down, enabling economical short-run custom colours.

Does Eterna offer standalone powder coating services?+

Yes. We can accept externally fabricated parts for standalone coating, curing, and inspection (minimum order value applies). Send part dimensions, quantity, and RAL colour to info@itiseterna.com for pricing.

Where is Eterna’s powder coating facility located?+

C-52, Block-C, Sector 80, Noida, Uttar Pradesh 201306, India. Integrated within the same facility as fabrication, welding, and assembly. Contact: info@itiseterna.com or +91 88004 99646.