What is a aluminium anodizing project report?
An aluminium anodizing project report is a detailed project report (DPR) for a plant that grows a hard oxide layer on aluminium profiles and parts in a sulphuric acid bath. It covers the process, tanks, rectifiers, chemicals, effluent treatment, project cost, finance, five-year projections, DSCR and break-even that a lender reviews.
Extrusion makers adding a finishing line, fabricators and first-time promoters use it to size the plant and apply for a term loan; banks use it to judge whether job-work charges can repay the debt.
Also known as: project report on aluminium anodizing, aluminium anodizing business plan, anodizing plant DPR, aluminium anodising unit project report.
Aluminium anodizing plant cost in India: our sample economics
The sample models a job-work plant of 6.8 metric tonnes (MT) per day, or 2,040 MT a year, running 300 days. It starts at 60% of capacity and reaches 80% in Year 5.
Revenue is the anodizing charge, taken at ₹37,400 per MT of aluminium treated. The customer owns the metal, so its value never enters your sales.
| Land and site development | 51.26 |
|---|---|
| Building and civil works | 95.75 |
| Plant and machinery | 172.53 |
| Other fixed assets | 38.77 |
| Contingencies | 13.41 |
| Preliminary and pre-operative | 9.29 |
| Working capital margin | 14.90 |
| Total | 395.91 |
| Promoter's contribution (25%) | 98.98 |
|---|---|
| Term loan from bank (75%) | 296.93 |
| Cash credit limit (separate) | 44.68 |
| Total project cost | 395.91 |
Term loan at 10.5% with a 6-month moratorium and 54 monthly instalments. The lowest DSCR is 1.65 in Year 2. All figures are illustrative.
Aluminium anodizing manufacturing process, step by step
Profiles move through a line of tanks on jigs hung from flight bars, lifted by an overhead crane. Every chemical bath is followed by a rinse, so the line is longer than the step count suggests.
- Racking
Profiles are clamped on aluminium or titanium jigs. Loose contact burns the metal or leaves bare patches, so racking skill decides much of the reject rate.
- Hot degreasing
A soak at about 75–80°C lifts press oil, dust and handling marks before any etching starts.
- Caustic etching
A caustic soda bath at around 50°C dissolves a thin skin of metal, hiding die lines and giving the familiar matt finish.
- Deoxidising
An acid dip removes the dark smut that etching leaves on alloying elements, so the oxide grows evenly.
- Anodizing
The jig becomes the anode in a chilled sulphuric acid bath. Direct current from the rectifier builds a porous oxide film to the ordered grade.
- Colouring
Bronze and black shades come from tin salts deposited in the pores by alternating current, or from organic dyes for bright colours.
- Sealing and inspection
Nickel acetate at 85–90°C or deionised water near boiling closes the pores. Thickness and seal quality are tested before the profiles are wrapped in film.
Bath temperatures are from ALIMCO's published anodizing plant specification. Your chemical supplier sets the exact values for your alloy and finish.
Which coating grade should your anodizing line be built for?
The grade you sell decides tank time, rectifier size and chiller load. IS 1868 sets minimum coating thickness by grade, and the grade number is the thickness in microns.
| AC 25 | Permanent outdoor installations where the surface must keep its look with little maintenance, such as facades and curtain walls |
|---|---|
| AC 15 | Outdoor architectural work, demanding indoor conditions, and graphic parts for defence and professional equipment |
| AC 10 | Outdoor parts that are cleaned often, such as decorative vehicle trim, and some indoor uses such as refrigerator parts |
| AC 5 | General indoor applications |
| Sealing check | Marking test for indoor work; sulphur dioxide humidity test under IS 5523 for outdoor service |
Plan for the thickest grade you will sell: a line sized for AC 10 trim cannot take AC 25 facade orders without more tank time and cooling.
Chemicals and consumables for an anodizing plant
In a job-work plant the raw materials are process chemicals, not aluminium. In our sample they cost ₹120.46 lakh in Year 3, about 22.6% of sales.
| Chemical | Share of cost | Year 3 (₹ lakh) |
|---|---|---|
| Sulphuric acid | 24% | 28.91 |
| Caustic soda flakes | 18% | 21.68 |
| Electrolytic colouring salts and dyes | 18% | 21.68 |
| Nickel acetate sealing chemicals | 14% | 16.87 |
| Degreaser and deoxidiser chemicals | 12% | 14.46 |
| ETP and DM water treatment chemicals | 14% | 16.86 |
| Total | 100% | 120.46 |
Dissolved aluminium builds up in the anodizing bath, so part of the acid is drained and replaced on a schedule.
Machinery for an aluminium anodizing line
Rectifiers are the largest single item in our sample, followed by the pretreatment tanks and the effluent and DM water plants.
| Machine | What it does | Sample cost (₹ lakh) |
|---|---|---|
| IGBT rectifiers | Supply direct current for anodizing and alternating current for colouring | 31.06 |
| Pretreatment tanks | Hold the degreasing, etching, deoxidising and rinse baths | 24.16 |
| Effluent treatment and DM water plants | Treat rinse water and make pure water for final rinse and sealing | 22.43 |
| Lead-lined anodizing tanks | Hold the acid bath, with cooling coils inside | 20.70 |
| Chiller and heat exchanger | Remove the heat that anodizing current puts into the bath | 20.70 |
| EOT crane, flight bars and jigs | Move loads from tank to tank | 17.25 |
| Sealing tanks with heating | Keep sealing baths near boiling | 13.80 |
| Fume extraction and wet scrubber | Draw acid and caustic mist off the tanks and wash it | 13.80 |
| Thickness gauge and lab kit | Check coating thickness, sealing and bath strength | 8.63 |
| Total plant and machinery | 172.53 | |
Costs are the sample report's estimates for a 6.8 MT per day line. Get current quotations before you finalise.
Power, water and manpower for an anodizing plant
Anodizing is an electrical process, so the power bill sits close to the chemical bill. Our sample puts power and fuel at ₹92.80 lakh in Year 3.
| Power and fuel | 17.4% of sales in the sample. The main loads are the rectifiers, the bath chiller and heating for the degreasing and sealing tanks |
|---|---|
| Water | Large volumes of rinse water go to the effluent plant; demineralised water is made on site for the final rinse and sealing |
| Fumes | Lip extraction on the acid and caustic tanks, with a water-washed scrubber and a chimney as the state board requires |
| Manpower | 38 people in the sample: 6 in management and supervision, 13 skilled operators and 19 helpers for racking and handling |
| Wage bill | ₹82.02 lakh in Year 1, rising 5% a year |
Licences and approvals for an aluminium anodizing unit
| Business registration | Udyam (MSME) registration and GST registration |
|---|---|
| Pollution board consent | Consent to establish and operate from the State Pollution Control Board. Metal surface treatment, including anodizing, is listed in the Red category |
| Hazardous waste authorisation | Needed for acid and alkali residues, spent baths and chemical sludge from wastewater treatment, which are listed hazardous wastes from metal surface treatment |
| Factory licence | Under the Factories Act where worker and power thresholds apply; rules vary by state |
| Fire safety | Fire NOC where the state requires it, given the stock of acids and caustic |
| Quality standard | IS 1868 for coating grade, thickness and sealing, usually written into architectural orders |
Siting rules for Red category units differ by state. Confirm the site with the state board before you buy land.
Who buys anodizing, and how a new plant gets orders
Most anodizers in India work on job work for extrusion mills and fabricators who do not run their own line. Demand follows aluminium windows, facades, interiors and enclosures, and orders are judged on shade match between batches, thickness and turnaround.
- Aluminium extrusion manufacturers without an in-house line
- Window, door and facade fabricators
- Architectural hardware, kitchen and furniture makers
- Electrical and electronic enclosure and heat sink makers
- Automobile and consumer product component makers
Where a new unit wins: profiles are long and scratch easily, so customers prefer an anodizer within easy trucking distance. A site inside an extrusion or fabrication cluster cuts freight and handling damage on both legs.
Mistakes that weaken an aluminium anodizing project report
- Counting the metal in sales
On job work the customer owns the aluminium. A report that books metal value as revenue looks large but shows margins a lender will not believe.
- Under-sizing the chiller and rectifiers
Thicker grades need more current and more cooling. A line sized for thin coatings cannot take facade work without new equipment.
- Treating the effluent plant as an extra
Without a working ETP and sludge disposal tie-up, consent to operate is delayed and the plant stands idle while the loan clock runs.
- Assuming no rejects
Burnt contacts, streaks and shade mismatch need stripping and re-anodizing. The report should allow for rework time and chemicals.
- Ignoring customer credit
Fabricators often pay late. Our sample carries 45 days of receivables, ₹56.44 lakh in Year 1, which drives the working capital limit.
How NPCS helps you plan an aluminium anodizing plant
- Line capacity and gradesSize the tanks, rectifiers and chiller for the coating grades and colours your buyers order.
- Equipment and chemical suppliersCompare line builders, rectifier makers and chemical systems, with quotations.
- Bank-ready project reportJob-work revenue, projections, DSCR and working capital in the format your lender wants.
- Effluent and approvals planETP sizing, hazardous waste handling and the consent list for your state.
NPCS's published client list includes 116 assignments in metal products, and the NPCS project team has prepared project reports for entrepreneurs, banks and companies since 1994.
What's inside the aluminium anodizing sample report
- Introduction
- Uses and applications
- Market potential
- Manufacturing process
- Raw materials
- Plant and machinery
- Land, building and utilities
- Manpower
- Licences and approvals
- Project cost and means of finance
- Working capital
- Projected profitability
- Cash flow statement
- Projected balance sheet
- Depreciation
- Term loan repayment
- Debt service coverage
- Break-even analysis
- Financial ratios
- Key assumptions
- Conclusion
- Monthly loan repayment schedule
19 pages, five-year projections, illustrative figures.
Open sample reportFree sample or a report for your project?
| What you get | Free sample | NPCS report for your project |
|---|---|---|
| Capacity and location | Typical unit | Your capacity, site and state |
| Figures | Illustrative | Built on current prices and quotations |
| Machinery suppliers and quotations | No | Yes |
| Market survey for your region | No | Yes |
| Bank or scheme format (PMEGP, term loan) | No | Yes |
| Use for a loan application | No | Yes |
Real NPCS aluminium anodizing project reports
These are aluminium anodizing project reports NPCS has prepared, with the plant capacity, total capital investment, rate of return and break-even worked out in each. Costs have moved since some were written, so we bring any of them up to date for your capacity and location.
| Project report | Plant capacity | Total investment | Rate of return | Break-even | Action |
|---|---|---|---|---|---|
| Aluminium Anodizing | Aluminium Anodized Articles: 10 MT / day | ₹2.57 crore | 26% | 57% | Get this report |
Figures as worked out in each NPCS report. Total investment includes plant and machinery, land and building, and working capital.
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Aluminium Anodizing project report: frequently asked questions
What is the cost of setting up an aluminium anodizing plant in India?
A small job-work line of 1–3 MT per day needs roughly ₹80–150 lakh, excluding land. Our sample report models a 6.8 MT per day plant at ₹396 lakh, of which ₹173 lakh is plant and machinery. These are indicative figures; your report is costed for your capacity, colours and location.
Which chemicals are used in aluminium anodizing?
Sulphuric acid forms the anodizing bath and caustic soda is used for etching. Degreasers and deoxidisers clean the metal, tin salts or dyes give colour, and nickel acetate or hot deionised water seals the pores. In our sample report, chemicals cost about 22.6% of sales, with sulphuric acid the largest single item at 24% of chemical cost.
Which machines are needed for an anodizing plant?
You need a row of process tanks, lead-lined anodizing tanks with cooling coils, rectifiers and a chiller for the anodizing bath. Add heated sealing tanks, an EOT crane with flight bars and jigs, fume extraction with a scrubber, a DM water plant and an effluent treatment plant. A coating thickness gauge is needed for quality checks.
Is an aluminium anodizing business profitable?
It can be, if the line stays loaded. In our illustrative sample, a 6.8 MT per day job-work plant earns a 24% return on investment in Year 3 and breaks even at 41% of capacity. It pays back in about 3.4 years. Profit depends mostly on job-work rates, power tariff, reject rates and how quickly customers pay.
Which pollution category is an anodizing unit?
Metal surface treatment that includes anodizing is in the Red category on the State Pollution Control Board lists that follow the CPCB categorisation. You need consent to establish and consent to operate, a working effluent treatment plant, and authorisation for hazardous waste such as ETP sludge and spent baths. Check your state board's current list before buying land.
What anodizing thickness is used for windows and facades?
IS 1868 grades anodic coatings by thickness. AC 25 is meant for permanent outdoor installations with little maintenance, and AC 15 for outdoor architectural use and demanding indoor conditions. Thinner grades such as AC 10 and AC 5 suit trims and indoor parts. Architects and window system companies usually state the grade in their order.
Is the sample report free and can I use it for a loan?
The sample is free to view and download. It shows the format and depth of an NPCS report, but its figures are representative and not taken from a real project. Do not submit it to a bank. For a loan, NPCS prepares a report for your own capacity, location, coating grades and lender.
Sources and references
- IS 1868:1996 Anodic coatings on aluminium and its alloys: specificationBureau of Indian Standards, checked Oct 2026
- List of Red category industriesPunjab Pollution Control Board, checked Oct 2026
- Schedule I, list of hazardous wastes (Hazardous and Other Wastes Rules)Punjab Pollution Control Board, checked Oct 2026
- Technical specification for an anodizing plantArtificial Limbs Manufacturing Corporation of India (ALIMCO), checked Oct 2026
The NPCS project team, led by Ajay Kumar Gupta
This page and its sample report are prepared and reviewed by the NPCS project team, which has written techno-economic feasibility studies and detailed project reports since 1994.
Ajay Kumar Gupta founded Niir Project Consultancy Services (NPCS) and leads the organisation. With 40 years of experience in MSME project consulting, he has built the team that has delivered more than 28,000 project reports for clients worldwide, helping entrepreneurs plan and finance profitable manufacturing businesses.
- Published
- Last updated
- Next review
- Oct 2027
- Reviewed by
- NPCS project team
This page is reviewed every 12 months, or sooner when scheme limits, GST rates, BIS rules or pollution categories change. The sample report is illustrative: its figures are generated from industry-typical ratios for a unit of this size, checked so every statement balances, and are not taken from any client project.