Thursday, March 24, 2016

Pre-painted Zinc coated steel (PPGI) - Nam Kim Steel

Pre-painted Zinc coated steel (PPGI) - Nam Kim Steel

PECIFICATION AND STRUCTURE

- Standard: JIS G 3312
- Technology: full reverse roll coating
- Coating thickness: 10-20/15-30 micron
- Material Thickness: 0.25 ~ 1.2 (mm)
- Width: 600 ~ 1250 (mm)

 


QUALITY STANDARD:


PRE-PAINTED ZINC COATED STEEL STANDARD - JIS G 3312
PROPERTIESMEASUREMETHODSNAM KIM STANDARDSRESULTS
Corrosion resistanceSalt spray testASTM B 117
JIS Z 2371
NaCl 5%, 500hCorrosion
Weather resistanceQ.U.V testASTM D 4587
JIS K 5600
QUV, 1000hE, 0.5 gloss retansion >90%
HardnessPencil scratchingASTM D 3363
JIS S 6006
Mitshubishi
2H-3H, 1kg/cm2
No Scratch
Soivent resistanceMEK double rubbingASTM D 5402100 x 2.1kg/cm2No rub-off
AdhersionT-bend testASTM D 4145max 2T, scoth tapeNo rub-off
Impact testASTM D 27941/2'', 1000g, 500mm, scotch tapeNo rub-off
C.C.E.TASTM D 3359100x1mm2, scotch tapeNo rub-off
GloseElcometerASTM D 523meter - 60025+5
45+5
75+5

ADVANTAGES

- Pre-Painted Zinc Coated Steel (PPGI) is a product of high quality and durability.
- NAM KIM STEEL is manufactured by NOF hot-dip zinc coated steel material, Skin Pass Mill (SPM) equipment and advanced technique of full reverse roll coating.

Please contact me if you need more information.
Nam Kim Steel Manufacturer
Mr. Triet Le
Mobile/Whatsapp: +84 965 047 865
Email: trietlm@namkimgroup.vn

Monday, March 14, 2016

What is Galvalume (Aluzinc) Steel?

What is Galvalume (Aluzinc) Steel?

The Hot Dip Galvalume Steel Coil/Sheet is a kind of coated steel coil/sheet. With the cold rolled steel of different strength and thickness as substrate, it is produced through applying Al-Zn coat on both faces by hot dip process. In its coating, Al accounts for about 55%, Si 1.6%, while the remaining is Zn. It enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn. And its surface has bright silver color and regular embossed-like figure, which are highly decorative

Application:

Roofing and siding applications
Unexposed automotive parts
Appliances
Furniture
Outdoor cabinetry
Computer cases
Gutters
Pipes

What is the Benefit of Galvalume?

With Galvalume, the aluminum and zinc act together to resist corrosion and provide barrier protection on the roofing surface.  That is, it resists rust and resists cracking and peeling from weather.  It also resists cracking and peeling from the roll-forming process when the corrugated panels are formed.

Zinc alone could rust more, while aluminum alone may not resist hail and other damaging forces as well. Galvalume is thus likely to last longer in most situations (unpainted, about 30-40 years).  Lasting longer, of course, means it saves you money long term, since you won’t have to worry about maintenance and replacement as soon.  (It’s also relatively inexpensive at the outset compared to other long-lasting roofing options.)

Galvalume is versatile.  It’s fairly easy to install, even over existing surfaces, andlightweight.  It suits both in structural and architectural needs.  (For low-slope or flat roofs, structural is used.)  Unpainted GALVALUME requires less upkeep than other surfaces and is therefore sought in many commercial applications.  It is sometimes used unpainted for residential roofs, too, but can be painted to match any architectural styling.  It can even be formed and stamped to look like tile or shingle.

Galvalume steel can also help keep utility use and costs down.  It reflects the hot sun off the surface during the summer, allowing much less heat to enter into the underlying building and thus requiring less cooling effort.  It also reflects cool air back into the structure.  In the winter, it does just the opposite, keeping the heat of the building reflected back into itself.  Not only does this energy efficiency help save you money, but it’s also better for the environment.  It’s also better for the environment that it will not need to be torn off and disposed of as soon as other roofs likely would, and that most steel can be recycled.

As you can see, Galvalume is a great choice for your roofing material.  Its many benefits make it a favorite

Please contact me if you need more information.
Nam Kim Steel Manufacturer
Mr. Triet Le
Mobile/Whatsapp: +84 965 047 865
Email: trietlm@namkimgroup.vn

What is Galvanized Steel?

Galvanized steel is steel that has gone through a chemical process to keep it from corroding. The steel gets coated in layers of zinc oxide because this protective metal does not get rusty as easily. The coating also gives the steel a more durable, hard to scratch finish that many people find attractive. For countless outdoor, marine, or industrial applications, galvanized steel is an essential fabrication component.

Benefits of Galvanization

Zinc protects steel in two ways. First, it is highly resistant to rust; iron, a major component of steel, reacts very easily with oxygen and moisture and will eventually disintegrate. The layer of zinc on the surface prevents those elements from reaching the steel so quickly. It also develops a patina — a layer of zinc oxides, salts, and other compounds — that offers further protection. Zinc is also extremely durable and scratch resistant, and has a satiny appearance that many find attractive.

The outer layer also protects the steel by acting as a "sacrificial layer." If, for some reason, rust does take hold on the surface of galvanized steel, the zinc will get corroded first. Even in areas where the surface is scratched or damaged, the surrounding zinc will still corrode before the steel does. The lifespan of galvanized steel varies, but industrial steel with a 3.9 mil (0.0039 inches or 0.09906 mm) thick coating can last more than 70 years without maintenance under average conditions.

Uses

Galvanized steel can be found almost everywhere. Many individuals live in steel frame houses, and buildings are often made with galvanized steel roofs. There are multiple steel parts in cars that help protect them from the weather, and it's used in many marine applications due to its ability to withstand the salt and the elements. Besides being inexpensive, durable and effective, this metal is also popular because it can be recycled and reused multiple times.

Please contact me if you need more information.
Nam Kim Steel Manufacturer
Mr. Triet Le
Mobile/Whatsapp: +84 965 047 865
Email: trietlm@namkimgroup.vn

Tuesday, March 1, 2016

Galvanized and Galvalume! What is the difference

What is the difference of Galvanized and Galvalume?

1. Galvanized: Surface of galvanized steel evenly distributed the layer of zinc materials, which plays the role of anodic protection for base material, that means corrosion of zinc material give the protection of the base material , and only when all the zinc coating is corroded ,can harm done to the base metal inside.

2.Galvalume: Galvalume coating surface is made from 55% aluminum, 43.5% zinc and a little amount of other elements. Galvalume coating is of a honeycomb structure under microscopic circumstance .The “honeycomb”, which is made of aluminum, contains all the zinc .In this case, the galvalume coating also plays the role of anodic protection, but with the decrease of the zinc amount, and the zinc material covered by aluminum, the anodic protection reduced greatly. So once the galvalume steel sheets are cut, the cutting edge without protection will soon be corroded. So should galvalume sheets be cut less, and zinc-rich paint or anti-rust paint applied to the cutting edge could be able to increase the life of the steel sheets.

3. The different
3.1 Surface:  The surface of galvalume sheet is more beautiful than galvanized sheet, while the galvalume sheet is more expensive than galvanized sheet, and now the customer like the small spangle than regular spangle

3.2 Corroision: In a rainy and humid city, once corrosion occurs at some point on galvalume sheet, it will spread increasingly on whole board if you do not take measures timely to slowly rust; while galvanized rust not spread if it occurs at a point.

Even a galvalume with greatest quality cannot overcome this shortcoming. Therefore, when we propose customers of the galvanized products, we will explain to customers the difference between them, if they require galvalume products, then we can only try to use corrosion paint immediately once it is cut.

Nam Kim Steel Manufacturer
Mr. Triet Le
Mobile/Whatsapp: +84 965 047 865
Email: trietlm@namkimgroup.vn