Friday, July 12, 2013
Tuesday, January 3, 2012
Hot dip galvanizing my house main gate
Dear Kok Seong
Thank you for contacting us and the following are our reply.
1. if i make the gate using hollow steel section and solid steel rods welded together, can they be hot dipped galvanized? - All hollow steel frames or for that matter well fabricated steel can be hot dip galvanized but there is a need to be properly ventilated the hollow steel frame to allow zinc drainage and air venting please refer to our website again on "Design and Specifications"
2. after the gate had been hot dipped galvanized and if i later drill holes on it, will it start to rust? - Drilling will damage the galvanizing but as it is a thin material the damage is minimal. There will not be obvious sign of rusting as zinc do protect the drill area from rusting due to sacrificial protection of steel by zinc. Refer to our website "Corrosion of Steel"
3. after the gate had been hot dipped galvanized, and if i later do welding on it, will it start to rust? Welding galvanized steel will cause more damage than drilling as the welding process "burn away" the zinc coating. The damage is localized and the damage depends on the extend of welding and for small area the welded area can be treated by applying a coat of inorganic zinc rich primer and then painted over with a 2 pack epoxy paint.
i understand that welding the main gate in-situ cannot be avoided due to installation of either the eye-end -(for the hinge) or installation of bearings (at the hinges) need to be done last. Also, we might need to drill holes to install autogate components on it later.
We agree and it is sometimes unavoidable unless time is spent on planing before hot dip galvanizing and measurements taken accurately. Try using an experience fabricator whom has done many galvanized gates. Finally you must choose your design carefully and try not to add or change the design after sending your gate to the hot dip galvanizing plant.
1. if i make the gate using hollow steel section and solid steel rods welded together, can they be hot dipped galvanized? - All hollow steel frames or for that matter well fabricated steel can be hot dip galvanized but there is a need to be properly ventilated the hollow steel frame to allow zinc drainage and air venting please refer to our website again on "Design and Specifications"
2. after the gate had been hot dipped galvanized and if i later drill holes on it, will it start to rust? - Drilling will damage the galvanizing but as it is a thin material the damage is minimal. There will not be obvious sign of rusting as zinc do protect the drill area from rusting due to sacrificial protection of steel by zinc. Refer to our website "Corrosion of Steel"
3. after the gate had been hot dipped galvanized, and if i later do welding on it, will it start to rust? Welding galvanized steel will cause more damage than drilling as the welding process "burn away" the zinc coating. The damage is localized and the damage depends on the extend of welding and for small area the welded area can be treated by applying a coat of inorganic zinc rich primer and then painted over with a 2 pack epoxy paint.
i understand that welding the main gate in-situ cannot be avoided due to installation of either the eye-end -(for the hinge) or installation of bearings (at the hinges) need to be done last. Also, we might need to drill holes to install autogate components on it later.
We agree and it is sometimes unavoidable unless time is spent on planing before hot dip galvanizing and measurements taken accurately. Try using an experience fabricator whom has done many galvanized gates. Finally you must choose your design carefully and try not to add or change the design after sending your gate to the hot dip galvanizing plant.
Good luck and please let us know what is your location?
Regards,
How Boon Ngan
Galvaco Industries SB
From: CM4all-WebsiteCreator
To: "sales@galvaco.com"
Sent: Tuesday, January 3, 2012 4:19 AM
Subject: Your Enquiries
This is a contact request from your website:
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First name: wong
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Last name: kok seong
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E-mail address:
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Comment:
dear sir,
i am thinking of hot dipped galvanizing my house main gate and have a few questions about it:-
1. if i make the gate using hollow steel section and solid steel rods welded together, can they be hot dipped galvanized?
2. after the gate had been hot dipped galvanized and if i later drill holes on it, will it start to rust?
3. after the gate had been hot dipped galvanized, and if i later do welding on it, will it start to rust?
i understand that welding the main gate in-situ cannot be avoided due to installation of either the eye-end (for the hinge) or installation of bearings (at the hinges) need to be done last. Also, we might need to drill holes to install autogate components on it later.
hope you can provide some advice.
thank you.
--------------------------------------------------
--------------------------------------------------
To: "sales@galvaco.com"
Sent: Tuesday, January 3, 2012 4:19 AM
Subject: Your Enquiries
This is a contact request from your website:
--------------------------------------------------
First name: wong
--------------------------------------------------
Last name: kok seong
--------------------------------------------------
E-mail address:
--------------------------------------------------
Comment:
dear sir,
i am thinking of hot dipped galvanizing my house main gate and have a few questions about it:-
1. if i make the gate using hollow steel section and solid steel rods welded together, can they be hot dipped galvanized?
2. after the gate had been hot dipped galvanized and if i later drill holes on it, will it start to rust?
3. after the gate had been hot dipped galvanized, and if i later do welding on it, will it start to rust?
i understand that welding the main gate in-situ cannot be avoided due to installation of either the eye-end (for the hinge) or installation of bearings (at the hinges) need to be done last. Also, we might need to drill holes to install autogate components on it later.
hope you can provide some advice.
thank you.
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Thursday, October 14, 2010
Hot Dipped Galvanized Highway Guardrails
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Highway guardrail comprises hot dip galvanized steel "W" beams and "C" Channel post and are classed as semi-stiff safety crash barriers. They are planted along edge of roads, highways and expressways to prevent vechicles veering off the road into cliffs, slopes or into bridges, sign post, drains or into an on comming vehicle. Contact http://www.guardrailco.com/ for more information and details on this popular hot dip galvanized product
Saturday, July 31, 2010
Cold Galvanizing or Hot Dip Galvanizing
What is cold galvanizing and why is it not hot dip galvanizing?
Cold galvanizing is another form of a barrier coating on iron or steel. No doubt it is a good form of corrosion protection for steel as it is another type of paint with some zinc dust additive. The paint which may be either epoxy or alkyd, acts as a barrier coat whilst the zinc dust gives the additional galvanic sacrificial property to this type of paint. The advantage of this type of zinc rich paint is it can be stored in drums or aerosal spray cans. It is easy to carry around and can be used to repair bare iron or steel surface. For best results the iron or steel surface has to be properly cleaned and application has to be at low humidity.
Cold Galvanizing paints will not produce a coating similar to the hot dip galvanizing coating. Cold galvanizing can not replace hot dip galvanizing as hot dip galvanizing has to be performed in a specially build plant with huge chemical tanks, heavy lifting cranes and a huge zinc bath filled with molten zinc at 450 degree Celsius. When iron of steel are hot dip galvanized the surface of steel is transformed to a series of iron zinc alloy layers. This coating is metallurgical bonded to the base steel. These series of alloy layers are actually harder than the base steel and it is a galvanic sacrificial zinc layer on steel.
Cold galvanizing is another form of a barrier coating on iron or steel. No doubt it is a good form of corrosion protection for steel as it is another type of paint with some zinc dust additive. The paint which may be either epoxy or alkyd, acts as a barrier coat whilst the zinc dust gives the additional galvanic sacrificial property to this type of paint. The advantage of this type of zinc rich paint is it can be stored in drums or aerosal spray cans. It is easy to carry around and can be used to repair bare iron or steel surface. For best results the iron or steel surface has to be properly cleaned and application has to be at low humidity.
Cold Galvanizing paints will not produce a coating similar to the hot dip galvanizing coating. Cold galvanizing can not replace hot dip galvanizing as hot dip galvanizing has to be performed in a specially build plant with huge chemical tanks, heavy lifting cranes and a huge zinc bath filled with molten zinc at 450 degree Celsius. When iron of steel are hot dip galvanized the surface of steel is transformed to a series of iron zinc alloy layers. This coating is metallurgical bonded to the base steel. These series of alloy layers are actually harder than the base steel and it is a galvanic sacrificial zinc layer on steel.
Sunday, December 6, 2009
Galvaco Industries Malaysia
Galvaco Industries Sdn Bhd is a hot dip galvanizing company in Malaysia. The Company provides hot dip galvanizing services to customers such as manufacturers of steel products, steel structure fabricators and contractors, Steel hardware, Steel merchants & dealers and other steel products suppliers.
Galvaco Industries operate a hot dip galvanizing plant at:
Lot 6, Jalan Playar 15/1, 40000 Shah Alam,
Selangor, West Malaysia.
Tel No:603-55127228,Fax No:603-55137228,Mobile No:6012-2088228
Website: www.galvaco.com Email: sales@galvaco.com
Galvaco Industries operate a hot dip galvanizing plant at:
Lot 6, Jalan Playar 15/1, 40000 Shah Alam,
Selangor, West Malaysia.
Tel No:603-55127228,Fax No:603-55137228,Mobile No:6012-2088228
Website: www.galvaco.com Email: sales@galvaco.com
Application and use of hot dip galvanizing
The hot dip galvanizing process produces a durable zinc iron alloy coating on steel protecting it from corrosion. Steel Products that are normally hot dip galvanized are highway guardrail, crash barriers, transmission towers, street lighting poles, pressed steel water tanks, steel structures for chemical and power plants, parapet handrails, steel reinforcements for walls, steel fencing, gates, grills, and many other applications .
Saturday, December 5, 2009
The Hot Dip Galvanizing Process
Fabricated steel products are carefully attached to a overhead lifting device in the hot dip galvanizing plant then dipped in a series of tanks filled with chemicals to remove surface contaminants such as dirt, paint, oil, grease and rust. The first chemical tank is a heated caustic solution followed by the hydrochloric acid pickling solution to remove mill scales and rust. The cleaned steel is then dipped into a heated Flux solution. Upon drying the article is then dipped into a pot of hot molten zinc. The final stage is to quench the hot dipped galvanized steel by dipping it into a final passivation solution.
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