Case Study: Aluminium Profile Vertical Coating Line
Summary
A 9 m vertical powder coating line for one of the largest aluminium extruders in the United Arab Emirates, supplying door, window and curtain-wall fabricators across the Gulf, coating architectural profiles from 1.5 to 7 m long. Daily capacity rose from 1,800 m to 4,500 m of profile, salt-spray testing reached 2,200 hours, and powder utilisation is above 97% with 14 guns and reciprocators around the vertically hung profiles. The 9 m bridge gas oven cures at 200–220 °C at 0.8–2.5 m/min. Figures as reported after commissioning in 2023.
Project Background
The client is one of the largest aluminum profile manufacturers in the UAE, supplying door & window factories and curtain wall contractors across the Gulf region. They demanded coatings with 25-year outdoor service life. Their previous vertical manual spray was inefficient and produced inconsistent thickness.
The Challenge
Architectural aluminum profiles run 4-7 m long (max 6.8 m), requiring tall booths and special conveyance. Profile cross-sections are complex (multi-cavity, decorative patterns) — standard booths produce missed spots or powder buildup.
MUSI's Solution
MUSI engineered a 9-meter-tall vertical powder coating system: workpieces hang vertically through the booth with 14 circumferentially-mounted spray guns + reciprocating motion ensuring uniform coating on all faces. Outdoor-grade polyester powder paired with precise oven control delivers 2,000+ hour salt spray performance.
Equipment Configuration
| Booth | 9 m vertical powder coating booth |
|---|---|
| Workpiece length | 1.5-7 m |
| Max cross-section | 300×300 mm |
| Spray guns | 14 (circumferential + vertical reciprocator) |
| Conveyor speed | 0.8-2.5 m/min |
| Drying oven | 9 m bridge gas oven, 200-220 °C |
| Throughput | 400-500 m²/hour |
| Powder utilization | ≥97% |
Equipment used on this line
The core machine on this project was a vertical powder coating line. For the selection logic behind it, see vertical vs horizontal aluminium profile coating lines.
- Automatic spray coating lines — overhead chain, floor belt and robotic flexible lines
- Powder coating systems — electrostatic booths, vertical lines, quick colour change and powder recovery
Implementation
95-day project from site survey to production launch. Construction challenges: ceiling raise (partial roof opening) and heavy vertical booth lifting. MUSI worked closely with the client's contractors to complete safely and on time.
Results
Daily capacity rose from 1,800 m to 4,500 m — a 150% increase. Salt spray testing reached 2,200 hours flawless. The client won orders from premium door & window brands and grew 40% YoY. Now a leading supplier in the UAE.
Client Feedback
"We evaluated several suppliers before choosing MUSI. Their vertical booth technology is the most mature solution we found. Over a year in operation now, no significant issues."
— Project Manager, Client Side
What does a vertical powder coating line for aluminium extrusions consist of?
The UAE line above is one configuration of MUSI's vertical powder coating line: extrusions hang upright from a vertical conveyor, pass a tall booth with guns on vertical reciprocators and cure in a dedicated tower oven. The published specification of the standard system is:
| Item | Published specification |
|---|---|
| Conveyor height | 4–7 m |
| Maximum workpiece length | Up to 8 m |
| Spray guns | Vertical-array electrostatic, 60–100 kV; 6–24 guns on vertical reciprocators |
| Booth dimensions | 8×3×6 m (typical) |
| Powder recovery | ≥98% (vertical drop design) |
| This project | 9 m booth, 14 guns, profiles 1.5–7 m, conveyor 0.8–2.5 m/min, 9 m bridge gas oven at 200–220 °C |
Vertical and horizontal layouts for extrusions are compared in the vertical vs horizontal aluminium profile coating line guide; pretreatment, powder and building-height requirements are on the aluminium industry page.
Selection logic: why this configuration
Vertical hanging was chosen over a horizontal line because 7 m profiles hung upright receive even film on all faces with hook marks only at one end, and the line needs less than half the floor area. The client already had a vertical manual booth, so the layout change was a roof lift rather than a new hall. Outdoor-grade polyester with a chromate-free pretreatment was specified for the 25-year Gulf service requirement.
Scope of supply and key components
| Item | Specification | Notes |
|---|---|---|
| Vertical powder booth | 9 m, 14 guns with vertical reciprocators | Profiles 1.5–7 m, cross-section to 300 × 300 mm |
| Vertical conveyor | 0.8–2.5 m/min | Hanging tooling for profile bundles |
| Powder recovery | Cyclone with after-filter, utilisation ≥97% | |
| Curing oven | 9 m bridge gas oven, 200–220 °C | |
| Pretreatment | Spray tunnel with chromate-free conversion coating |
Key components
Key components are available from international brands, configurable per customer specification, so that spare parts can be sourced locally over the life of the line. Brand names below are the usual options for this type of equipment; the brands actually fitted are fixed in the contract specification.
| Component | Brands available on request |
|---|---|
| Automatic powder guns and powder feed | International tier-one powder spray gun brands |
| Oven and dryer gas burners | Riello RS series, Weishaupt monarch WM-G, Baltur TBG, Honeywell Maxon OVENPAK, Eclipse |
| PLC and HMI | Siemens SIMATIC S7-1500, Mitsubishi Electric MELSEC iQ-R, Schneider Electric Modicon, OMRON NX, Rockwell Automation Allen-Bradley |
| Variable-frequency drives | ABB ACS580, Siemens SINAMICS G120, Danfoss VLT, Schneider Electric Altivar, Yaskawa, Mitsubishi Electric |
| Conveyor gear motors | SEW-EURODRIVE, NORD DRIVESYSTEMS, Bonfiglioli, Siemens, Sumitomo Drive Technologies |
| Pretreatment pumps and chemistry | Grundfos CR, KSB Etanorm, Xylem; Henkel BONDERITE, Chemetall Gardobond, PPG Zircobond, Nippon Paint |
| Dust collector filter cartridges | Donaldson Ultra-Web, Parker BHA, Camfil, MANN+HUMMEL |
| Sensors and temperature controllers | SICK, Pepperl+Fuchs, OMRON E5CC, Honeywell UDC, Yokogawa UT, ifm, KEYENCE |
Not included in the scope of supply
- Civil works, foundations and pits
- Building services up to the battery limit: power supply, gas, compressed air, water and drainage
- Local permits, emission approvals and third-party inspections
- Paint or powder supply, unless stated in the contract
Services included with every line: engineering design, manufacturing, shipping documentation, installation supervision, commissioning, operator training, warranty and spare parts.
Typical programme
The durations below are typical for equipment of this class and are given for planning; they are not the recorded schedule of this project. A complete line usually runs 90–180 days from contract to acceptance, a single unit 30–60 days.
| Stage | Typical duration | What happens |
|---|---|---|
| Site survey and workpiece review | 5–10 days | Remote review of drawings and photos, or an engineer visit |
| Layout and detail design | 15–30 days | Layout drawing, utilities list and specification sign-off |
| Manufacturing | 45–90 days | Booths, ovens, conveyor, pretreatment and controls built and pre-assembled at the works |
| Shipping | 20–45 days | Sea freight; equipment shipped in sections for on-site assembly |
| Installation | 15–40 days | MUSI supervision with the client's installation crew or MUSI crew |
| Commissioning, training and acceptance | 7–15 days | Trial runs on the client's parts, operator training, acceptance record |
Results: before and after
Figures are those published on this page; measurement party, sample size, test date and method are not on record here and are left blank rather than estimated.
| Metric | Before | After | Change | Measured by | Single / average | Samples | Test date | Method / instrument |
|---|---|---|---|---|---|---|---|---|
| Daily output | 1,800 m | 4,500 m | +150% | |||||
| Neutral salt spray | — | 2,200 h | — | |||||
| Powder utilisation | manual booth | ≥97% | — |
Applicability and limits
The 400–500 m²/h throughput and 2,200-hour salt-spray result apply to architectural extrusions with vertical hanging and the stated powder and pretreatment. Profiles heavier than the hanging tooling allows, short profiles below 1.5 m, or plants with a ceiling under 10 m are usually served better by a horizontal line; the comparison is in the linked guide.
Results shown in this case study reflect the stated operating conditions and should not be interpreted as guaranteed performance under different feed, production, environmental, or site conditions.
After-sales and spare parts
Warranty on a MUSI coating line runs from acceptance: 12 months on the complete line excluding consumables, 36 months on critical components such as motors, drives and the PLC, and 60 months on structural parts such as steel structure, ducting and oven bodies. Failures within warranty, excluding misuse, are repaired free of charge.
Support starts remotely: the service line is staffed around the clock, a preliminary diagnosis with recommendations is given within 2 hours, and where a site visit is needed an engineer reaches any major city within 72 hours. A spare-parts inventory is held at the Changzhou headquarters with same-day shipping, and customers can keep a dedicated parts stock at MUSI for emergencies. Details are on the after-sales service page.
FAQ
What building height does a vertical line need? This 9 m booth needed a roof opening; in general plan for at least 10–11 m clear height for 7 m profiles including the conveyor and oven return.
Why does a vertical line use less powder? Profiles hang close together and the guns spray a narrow vertical curtain, so less powder passes the parts and the cyclone returns most of what does; utilisation on this line is above 97%.
How much faster is it than the previous manual vertical booth? Daily output rose from 1,800 m to 4,500 m of profile with automatic guns and reciprocators replacing manual spraying.
How long did installation take? Ninety-five days from site survey to production, including the roof modification and lifting of the vertical booth.
Can the same line coat both architectural and industrial profiles? Yes, if the cross-section stays within 300 × 300 mm and the hanging tooling suits the profile; colour changes are done with the quick-clean booth and separate powder hoppers.
Next step: a configuration proposal for a similar line
If your parts, volumes or plant conditions are close to this project, MUSI can return a line configuration and layout proposal. To prepare it we need four things:
- Photos and dimensions of the workpieces, with weight and material
- Required output (pieces per hour or per day, and shifts)
- Number of colours and how often colour changes are needed
- Available floor space and ceiling height, with the utilities on site
Message us on WhatsApp with these details, or use the quotation form.
Provided by Lin Cong, Technical Director, MUSI Technology · Published 2026-05-02 · Updated 2026-09-30 · Last technical review: 2026-09-30
QQuestions buyers ask before ordering
quotation · price · lead time · installation · warranty
What information do you need to prepare a quotation?
Send part drawings or photos, the largest part size and weight, the material, the required output per shift, the paint or powder type and number of colours, and the available floor space, ceiling height and power or gas supply. MUSI engineers reply within 24 hours; a recommended configuration and quotation follow once your part data is complete.
How much does this equipment cost?
Budget depends on part size, throughput and the level of automation. Indicative ex-works ranges are published in our complete coating line cost guide; a configured quotation is prepared from your part data. Published indicative ex-works ranges: a complete powder coating line is roughly USD 75,000–230,000 semi-automatic, USD 200,000–600,000 for a standard automatic line and USD 600,000–2,000,000 for a high-throughput automated plant.
What is the lead time?
Standard configurations ship in 30–60 days from contract signing and down payment; custom configurations take longer. The delivery date is fixed in the contract.
Do you install and train operators overseas?
Yes. MUSI engineers carry out on-site installation and commissioning and give 3–5 days of operator and maintenance training. MUSI has delivered 800+ coating lines to customers in 36 countries.
What warranty and after-sales support are included?
12 months full-machine warranty, 36 months on critical components and up to 60 months on structural parts. International customers get 24-hour phone response and 72-hour on-site arrival; spare parts ship from the Changzhou headquarters.
Can the environmental equipment be supplied with the line?
Yes. VOC treatment (RTO, RCO, activated carbon, zeolite rotor), dust collection and paint wastewater treatment are supplied with the coating line under one contract; MUSI has equipped 50+ coating facilities whose projects all passed local environmental compliance reviews.
More questions from buyers
Which coating line was supplied for these aluminium profiles?
A 9 m vertical powder coating line for architectural aluminium profiles from 1.5 to 7 m long. It uses 14 guns on reciprocators and a bridge gas oven that cures at 200-220 °C at 0.8-2.5 m/min.
Related: vertical powder coating line · powder coating systems · vertical vs horizontal aluminium line
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