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How to start a simple, low investment galvanizing plant

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Q. I am based in Taupo North Island New Zealand wanting to know how I go about building a galvanising Plant?

Michael Stuart
- New zealand
March 30, 2022
privately respond to this RFQ
Ed. note: As always, gentle readers: technical replies in public and commercial replies in private please (huh? why?)

⇩ Related postings, oldest first ⇩

Q. I'm having a tap-out problem in my Hot dip galvanizing plant very often (once in 3 years.) I want to know the reasons behind that. Thank you.

Kannan
- Chennai, Tamilnadu, India
2002

A. Dear Mr. Kannan,

Could you please describe your "tap-out problem" in more detail? What do you mean with tap-out? Does your kettle break? Or is your intention to empty the kettle 3 times a year?

Best regards,

Peter Kordt
- Hagen, Germany

User's Guide to Hot Dip Galvanizing for Corrosion Protection in Atmospheric Service
by NACE
[only rarely available]

on AbeBooks

or eBay or

Amazon

(affil links)

"Hot Dip Galvanizing
A Guide to process Selection & Galvanizing Practice"
by M. J. Hornsby
galv_practice_hornsby1995

on AbeBooks

or eBay or

Amazon

(affil links)

Q. Hi,

I am a US citizen living in Honduras, Central America. I want to start a hot dipping galvanizing small plant to use it for my wrought iron components and furniture factory, and further improve the quality of these for outdoors use. This would be a good sales point, having galvanized wrought iron forged components and furniture to use in home and buildings in the outdoors. Capable of tolerating environmental conditions. The questions is: how do I get started with a simple and low investment galvanizing plant, do I need special machines, what would be the process and test methods recommended. There are not much regulations here in terms of environmental issues in comparison to the US.

Thank you for you reading and helping with your answers.

Sergio Borjas
2002
- Tegucigalpa, HONDURAS

A. I would recommend that you set up a powder booth for outdoor furniture Vs hot dip or electro-galvanizing.

Jack Lofstrom
- Glenview, Illinois, USA

A. The Galvanizing process hasn't radically changed over the past 100 years. The process simply consists of a number of pre treatment baths followed by the Zinc Kettle and finally a dichromate quench, which helps minimize the effects of white rusting. Do you opt for galvanizing or do you choose powder coating? To answer this you must first ask yourself the following questions.

1. To what level do you want your product protected?
2. What are your current levels of production?
3. What will be the largest item you will want protecting?
4. How much room do you have? If galvanizing is the option for you then the setup is very simple, the largest asset being the cost of the zinc itself.

Happy investigating..

Ash Arya
- Auckland, New Zealand

RFQ: We are seeking for a small "Hot Dip Galvanization Plant" for galvanization of steel. A financial & technical offer at the earliest convenience will be highly appreciated .

Mustafa Mohammed
- Dhahran, Eastern, Saudi Arabia
2003

Ed. note: Sorry, this RFQ is old & outdated, so contact info is no longer available. However, if you feel that something technical should be said in reply, please post it; no public commercial suggestions please ( huh? why?)

RFQ: I am involved in the steel industry in Cape Town South Africa and would like to start up my own galvanizing plant.

Gary Koen
steel - Cape Town, Western Cape, South Africa
2004

RFQ: We need to install a hot dip galvanizing plant in Dammam Saudi Arabia of size 12.2 mtr long x 1.2 mtr wide x 1.6 mtr depth.

We are looking for quotations from China, India, Thailand, Korea.

Sidabul Galvanizing
- Dammam, Saudi Arabia
2005

Q. I am based on the south coast ,in South Africa and discovered a demand on the galvanising industry.

What are my requirements?.

Thanks,

Dessie Ramnath
private - Kwa Zulu Natal , Port Shepstone, South Africa
2006

"Handbook of Hot Dip Galvanization"
by Maass & Peissker
galv_hot_dip_handbook2011

on AbeBooks

or eBay or

Amazon

(affil links)

Q. I need to start a galvanizing plant.
1.What space do I need
2.What do I need (Baths, Ovens)
3.Layout of a galvanizing plant.
4.How do you do galvanizing, step by step

Eddie Daniel
new plant - Sasolburg, South Africa
March 23, 2008

A. Approach with caution. In the USA, more than one new and good galvanizer was put out of business because an established shop can lower its price enough to make it impossible for a new shop to compete. His equipment is paid for.

James Watts
- Navarre, Florida

A. Sir:
A "small" galvanizing plant has many problems. The laws of physics must be taken into consideration. A small pot of molten zinc has a low heat capacity and thus production will be correspondingly low. You need to consider what you want for an hourly throughput and determine what the temperature drop will be for each "lift" (load) and how many "lifts" you need per hour. If the temperature drop is more than a few degrees C then zinc drainage from the workpieces will suffer. Additionally you need enough length in the kettle to have an "ash box" which allows partial recovery of dry ash. Further the kettle needs to be 1.5 to 2 times deeper than wide to provide enough heat input to make-up for radiated heat losses at the zinc/air interface and for production. Dross removal in a small kettle is another problem. A "clam" does not do a good job of drossing, whereas a "scoop" works well but cannot fit into a short kettle. With reasonable good production, dross accumulation in a short (small) kettle will require frequent drossing because it has rapid vertical accumulation. About the smallest viable kettle I have worked with was about 12 ft x 4 ft (wide) x 6 ft deep and used for spin work. A kettle smaller than this is difficult to make money from.

Regards,

Dr. Thomas H. Cook
Galvanizing Consultant - Hot Springs, South Dakota, USA

A. The question is not specific enough. It's like asking "What car is best for me?" without specifying the operating conditions.
What market? Tonnage? sizes? prices? captive or jobbing? experience or not?

Geoff Crowley
Crithwood Ltd.
Westfield, Scotland, UK

Q. Can you kindly explain those simple setups for starting a small hot dip galvanizing plant, because I need to start one. please!

Thabisa Nkosiyane
manufacturing washers - South Africa
July 21, 2011

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