hot dip galvanizing products manufactured in malaysia
Products that are Hot Dip Galvanized such as the Pressed Steel Tank for water storage and steel towers, Guardrails,Highway Guardrails or Highway Safety Crash Barriers. Playground Equipment and Garden Furniture are normally Hot Dip Galvanized and Duplex Powder Coated for its colorful appeal...for more information on these products contact us
PRESSED STEEL WATER TANKS - These are pressed steel panels bolted together for water storage typically for fire protection systems, domestic water and air conditioning systems in buildings. These water storage tanks are normally supplied complete with covers, internal and external ladders, water level indicators and are mostly hot dip galvanized for corrosion protection. The pressed steel water storage tanks are bolted together from the outside with sealastrip and bitumum compound for water tightness. These pressed steel tank panels are held together with hot dip galvanized internal trusses and anchorage systems
PRESSED STEEL WATER TANKS - These water storage tanks are constructed from standard galvanized pressed steel tank panels of 1.2 m x 1.2 m and of various steel thickness from 3 mm, 4.5mm and 6 mm thickness. A typical standard tank size of 1.2 m x 1.2 m x 1.2 m (ht) would hold a maximum of 1728 liters of water. Bigger tanks sizes are in multiples of the standard unit and may be constructed to hold up to 100,000 liters (3.6 m x 6 m x 4.8 m (ht)) or larger volumes.
DAILY APPLICATIONS OF HOT DIP GALVANIZING
The selection of a steel coating system is an integral part of all engineering design. The main consideration for the engineer in the selection of the most suitable corrosion protection system would be the performance of a steel coating and the economics of the application of the steel coating system. There is no other corrosion protection system that could match the performance and economics of Hot dip galvanizing
DAILY APPLICATIONS OF HOT DIP GALVANIZING
The selection of a steel coating system is an integral part of all engineering design. The main consideration for the engineer in the selection of the most suitable corrosion protection system would be the performance of a steel coating and the economics of the application of the steel coating system. There is no other corrosion protection system that could match the performance and economics of Hot dip galvanizing
APPLICATIONS OF HOT DIP GALVANIZED STEEL IN THE FOLLOWING SECTORS OF OUR ECONOMY
1) POWER GENERATION & TRANSMISSION
3) TELECOMMUNICATION TOWERS
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2) INFRASTRUCTURE DEVELOPMENT
4) BUILDING AND CONSTRUCTION
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1) POWER GENERATION AND POWER TRANSMISSION
In the building of a power station for power generation, steel is a major construction material. Galvanized steel is used in platforms, equipment buildings, stairs and handrails. In the area of fuel supply to the main power generating plants galvanized steel conveyor systems are common in a coal fired power station. Cooling water, water reticulation and fire protections systems consume huge amounts of galvanized steel in the form of piping and it fittings.
As for power transmission every piece of steel in a transmission tower is completely galvanized from the main steel frame, every piece of bolt and nut used to fasten the angles together to the cable support systems are completely galvanized. The are now many transmission towers that are also painted with special paint system for identification purposes.
2) INFRASTRUCTURE DEVELOPMENT
Government of many countries now invest and spent huge part of their budgets in improving the infrastructure such as road highways and expressways, railways, Light Rail Transport system (LRT) and Mass rapid Transportation system (MRT) , Port terminals and airport facilities. These projects consume huge amounts of exposed steel and as such hot dip galvanizing is the preferred corrosion protection system.
As for other developments such as schools, hospitals, community halls and other public places galvanized steel are mainly in galvanized products such as galvanized water tanks for fire protections systems, street lights, safety barriers and road and drain covers.
Hot dip galvanized reinforcement steel was only used in critical construction areas such as coastal or marine concrete structures. In the last decade the use of hot dip galvanized reinforcement steel increased with the rapid expansion of the road, highways and expressways. Steel rods and strips for reinforced earth (RE) walls and soil nails are always hot dip galvanized. Guardrails, crash cushions, decorative street lights, high masts, pedestrian overhead bridges, noise barriers, parapet handrails are some of the other products that are corrosion protected with hot dip galvanizing
3) TELECOMMUNICATION TOWERS
Telecommunication steel towers are difficult structures to maintain considering its location which normally are difficult to access since it is situated on hills slopes and on top of mountains. For easy installation these Steel Towers are fabricated from Steel Tubes in different sections and steel Angles of various sizes and lengths, Hot Dip Galvanized and fastened with Centrifuged Hot Dip Galvanized Bolts, Nuts and Washers. These 3 Leg Telecommunication Towers are 100% Hot Dip Galvanized and Duplex coated for long term corrosion protection and aerial Identification.
4) BUILDING AND CONSTRUCTION
The Petronas Twin Tower in Kuala Lumpur and the Kuala Lumpur Tower are prestigious projects in Malaysia. For durability most steel are Hot Dip Galvanized and Duplex coated. Commonly found in the open areas are Forged Welded Gratings hot dip Galvanized, Garden Lighting Poles Hot Dip Galvanized and Children Play Stations all Hot Dip Galvanized and Duplex Coated.
5) MINING
6) OIL AND GAS PRODUCTION
7) AGRICULTURE AND ANIMAL HUSBANDRY
8) FARMING
In the building of a power station for power generation, steel is a major construction material. Galvanized steel is used in platforms, equipment buildings, stairs and handrails. In the area of fuel supply to the main power generating plants galvanized steel conveyor systems are common in a coal fired power station. Cooling water, water reticulation and fire protections systems consume huge amounts of galvanized steel in the form of piping and it fittings.
As for power transmission every piece of steel in a transmission tower is completely galvanized from the main steel frame, every piece of bolt and nut used to fasten the angles together to the cable support systems are completely galvanized. The are now many transmission towers that are also painted with special paint system for identification purposes.
2) INFRASTRUCTURE DEVELOPMENT
Government of many countries now invest and spent huge part of their budgets in improving the infrastructure such as road highways and expressways, railways, Light Rail Transport system (LRT) and Mass rapid Transportation system (MRT) , Port terminals and airport facilities. These projects consume huge amounts of exposed steel and as such hot dip galvanizing is the preferred corrosion protection system.
As for other developments such as schools, hospitals, community halls and other public places galvanized steel are mainly in galvanized products such as galvanized water tanks for fire protections systems, street lights, safety barriers and road and drain covers.
Hot dip galvanized reinforcement steel was only used in critical construction areas such as coastal or marine concrete structures. In the last decade the use of hot dip galvanized reinforcement steel increased with the rapid expansion of the road, highways and expressways. Steel rods and strips for reinforced earth (RE) walls and soil nails are always hot dip galvanized. Guardrails, crash cushions, decorative street lights, high masts, pedestrian overhead bridges, noise barriers, parapet handrails are some of the other products that are corrosion protected with hot dip galvanizing
3) TELECOMMUNICATION TOWERS
Telecommunication steel towers are difficult structures to maintain considering its location which normally are difficult to access since it is situated on hills slopes and on top of mountains. For easy installation these Steel Towers are fabricated from Steel Tubes in different sections and steel Angles of various sizes and lengths, Hot Dip Galvanized and fastened with Centrifuged Hot Dip Galvanized Bolts, Nuts and Washers. These 3 Leg Telecommunication Towers are 100% Hot Dip Galvanized and Duplex coated for long term corrosion protection and aerial Identification.
4) BUILDING AND CONSTRUCTION
The Petronas Twin Tower in Kuala Lumpur and the Kuala Lumpur Tower are prestigious projects in Malaysia. For durability most steel are Hot Dip Galvanized and Duplex coated. Commonly found in the open areas are Forged Welded Gratings hot dip Galvanized, Garden Lighting Poles Hot Dip Galvanized and Children Play Stations all Hot Dip Galvanized and Duplex Coated.
5) MINING
6) OIL AND GAS PRODUCTION
7) AGRICULTURE AND ANIMAL HUSBANDRY
8) FARMING
HOT DIP GALVANIZING DESIGN CONSIDERATIONS
It is important to decide on the corrosion protection system most suitable for your design at an early stage. Once you have decided that the steel used in your projects requires hot dip galvanizing you then need to consider the following:-
1. DESIGN CONSIDERATIONS - SIZE AND SHAPES OF ARTICLES. The limiting factor to hot dip galvanize a steel structure, a vessel or any other steel products is its SHAPE AND SIZE. In event the size exceed the size of the galvanizing plants bath size it may be possible to DOUBLE DIP the steel structure or article if structure is too big for single immersion . In some tricky situations the double dipping may involve FLIPPING OVER OR ROLLING the steel article in the zinc bath.
The following diagrams show some important design considerations:
The following diagrams show some important design considerations:
2. DESIGN CONSIDERATIONS - OPEN MITRED JOINT. For tubular handrails it is very important to use an OPEN MITRED JOINT and if this is not possible sufficiently large internal holes (> 20 mm diameter) should be provide for molten zinc to move freely to cover all corners and edges of the work. As the molten zinc fill up the tubular sections it is VERY IMPORTANT to provide vent holes at the top most point so that hot air with moisture can escape freely. Without these vent holes the tubular sections are likely to explode in the molten zinc causing massive damage to equipment and threatened lifes of the operators. (refer to Diagrams 3 & 4)
3. DESIGN CONSIDERATIONS - CROPPED CORNERS ON "H" AND "C" SECTIONS. For steel structures fabricated from "H" or "C" sections, cropped corners must be provided to allow molten zinc to move freely to cover all corners and edges of the work. As the molten zinc fill up the "H" or "C" sections, it is VERY IMPORTANT to provide cropped corners so that molten zinc flow is not restricted and can molten zinc escape freely. Without these cropped corners molten zinc is trapped and this molten zinc freezes and remain as a lump of zinc on the structure. This will increases the overall weight of the steel structure causing unnecessary wastage to pure zinc. (refer to Diagrams 5 & 6)
4. DESIGN CONSIDERATIONS- MATERIAL SUITABLE FOR GALVANIZING - All iron and steel products are suitable for hot dip galvanizing. In cases of castings, care should be taken in handling and preparation for hot dip galvanizing. Casting should be throughly blast clean and should avoid contact with water to ensure that rust formation is minimized
3. DESIGN CONSIDERATIONS - CROPPED CORNERS ON "H" AND "C" SECTIONS. For steel structures fabricated from "H" or "C" sections, cropped corners must be provided to allow molten zinc to move freely to cover all corners and edges of the work. As the molten zinc fill up the "H" or "C" sections, it is VERY IMPORTANT to provide cropped corners so that molten zinc flow is not restricted and can molten zinc escape freely. Without these cropped corners molten zinc is trapped and this molten zinc freezes and remain as a lump of zinc on the structure. This will increases the overall weight of the steel structure causing unnecessary wastage to pure zinc. (refer to Diagrams 5 & 6)
4. DESIGN CONSIDERATIONS- MATERIAL SUITABLE FOR GALVANIZING - All iron and steel products are suitable for hot dip galvanizing. In cases of castings, care should be taken in handling and preparation for hot dip galvanizing. Casting should be throughly blast clean and should avoid contact with water to ensure that rust formation is minimized
Diagram 7
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Diagram 8
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It is important to decide on the corrosion protection system most suitable for your design at an early stage. Once you have decided that the steel used in your projects requires hot dip galvanizing you then need to consider the following:-
1. DESIGN CONSIDERATIONS - SIZE AND SHAPES OF ARTICLES. The limiting factor to hot dip galvanize a steel structure, a vessel or any other steel products is its SHAPE AND SIZE. In event the size exceed the size of the galvanizing plants bath size it may be possible to DOUBLE DIP the steel structure or article if structure is too big for single immersion . In some tricky situations the double dipping may involve FLIPPING OVER OR ROLLING the steel article in the zinc bath.
The following diagrams show some important design considerations:
2. DESIGN CONSIDERATIONS - FILLING, VENTING AND DRAINAGE. When galvanizing tanks, vessels and tubular sections, designers must consider the design to allow free flow of molten zinc during the filling stage and drainage of molten zinc from the steel article. For large vessels with internal diaphragm or baffles, it is important to provide venting and drainage openings for molten zinc to move freely in and out of compartments. Make sure that all flanges are flushed with he inside surface or the vessels. (refer to Diagrams 1 & 2)
3. DESIGN CONSIDERATIONS - OPEN MITRED JOINT. For tubular handrails it is very important to use an OPEN MITRED JOINT and if this is not possible sufficiently large internal holes (> 20 mm diameter) should be provide for molten zinc to move freely to cover all corners and edges of the work. As the molten zinc fill up the tubular sections it is VERY IMPORTANT to provide vent holes at the top most point so that hot air with moisture can escape freely. Without these vent holes the tubular sections are likely to explode in the molten zinc causing massive damage to equipment and threatened lifes of the operators. (refer to Diagrams 3 & 4)
4. DESIGN CONSIDERATIONS - CROPPED CORNERS ON "H" AND "C" SECTIONS. For steel structures fabricated from "H" or "C" sections, cropped corners must be provided to allow molten zinc to move freely to cover all corners and edges of the work. As the molten zinc fill up the "H" or "C" sections, it is VERY IMPORTANT to provide cropped corners so that molten zinc flow is not restricted and can molten zinc escape freely. Without these cropped corners molten zinc is trapped and this molten zinc freezes and remain as a lump of zinc on the structure. This will increases the overall weight of the steel structure causing unnecessary wastage to pure zinc. (refer to Diagrams 5 & 6)
4. DESIGN CONSIDERATIONS- MATERIAL SUITABLE FOR GALVANIZING - All iron and steel products are suitable for hot dip galvanizing. In cases of castings, care should be taken in handling and preparation for hot dip galvanizing. Casting should be throughly blast clean and should avoid contact with water to ensure that rust formation is minimized
5. DESIGN CONSIDERATIONS - WELDING SLAGS - Immediately after fabrication welding slags should be throughly removed by chipping, grinding, blasting or a needle gun. Welding slag adhesion to steel leaves not galvanized spots and it is not removable by the pre-treatment chemicals as it is inert
6. DESIGN CONSIDERATIONS - DISTORTION. As the galvanizing process involves immersion of steel into hot molten zinc the use of dissimilar thickness metals should be avoided.
7. FURTHER INFORMATION - http://galvaco.blogspot.com
DESIGN FOR GALVANIZING WALL CHART ....Contact us
HOT DIP GALVANIZING STANDARDS
The relevant hot dip galvanizing standards are the followings:
1) ASTM A 123/A 123M - 97a Standard Specification for Zinc (Hot-Dip Galvanizing) Coatings on Iron and Steel Products
2) BS 729:1971 Specification for Hot Dip Galvanized coatings on Iron and Steel Articles
3) BS EN ISO 1461:1999 Specification for Hot Dip Galvanizing
BS EN ISO 1461:1999 SPECIFICATIONS FOR HOT DIP GALVANIZING
SCOPE - This standard specifies the general properties and methods of test for coating applied by hot dip galvanizing in zinc (contain not more than 2% of other metals) on fabricated iron or steel articles. It does not apply to :
1) Sheet and wires that are continuously hot dip galvanize
2) Tube and pipe that are hot dip galvanized in automatic plants
3) Hot dip galvanized products for specific standards exists and which may include additional requirement different from those of the European Standard
Table 2 - Minimum Coating thickness on samples that are not centrifuges (microns)
Note: To convert Microns to Grams/m2 divide by 0.14
For further information on the above standards please contact us or you can also purchase these standards from SIRIM or Institute of Engineers Malaysia (IEM) in Malaysia or please contact your local authorities on Standards or your Galvanizing Associations