Prepainted Rolled Steel Coil for Roofing

Prepainted Rolled Steel Coil for Roofing

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Basic description Info.

Surface Treatment:Coated

Technique:Cold Rolled

Standard:JIS

Color:All Ral Color Are Available

Zinc Coating:30-120G/M2

Width:914-1250mm

Thickness:0.18-0.6mm

Export Markets:Global

Additional Info.

Trademark:VST

Packing:Standard Export Package

Origin:China

Production Capacity:10000t/Month

Product Description

Main Feature:

1, Pre-painted Steel Coil Can be used in building material field, galvanized wire steel tape and mainly other fields.

2, All color can be customized

3, Good quality with competitive price

Performance testing of color coated steel coil
Item	Method	Consequence
Tensile Test	Tic-Tac-9mm 5mm cross cupping	No damage
Bending Test	T≤ 3	No damage
Boiling Test	100° Cboiling 1 hour	No damage
Water Resistance	1000hours immersion in 40° C(edge)	No damage
Moisture Resistance	50° C90%100hours(edge)	No damage
Fire Resistance	Samples were placed in incubators, remove greenhouse cooling, and then test the adhesion	Long-term Environment in 100° C
Fire Extinction	Liquefied petroleum gas or natural gas burner	Immediately turn off
Drug Resistance	10%hydrochloric acid, saturated calcium, 10%H2SO4, 10%NAOH, gasoline, ethanol	No color and trace change
Salt spray test	5%Nacl, 35± 2° C, 500hours	No damage

Coating performance test standard
Test item	Positive standard	Back standard
Dry film thickness(um)	14-16	7-9
Glass(60degree)	High 70± 5, medium40± 5, low30± 5	30± 5degree
T bending	3	3
Impact strength	6.3	5.8
Pencil hardness(H)	H	H
MEK(Per)	> 100	> 100
Cross cut	0 class	0 class
Acid resistance	50%H2SO4 immersion in300hrs, no color, wrinkling, fading, change
Alkali resistance	50%H2SO4 immersion in300hrs, no color, wrinkling, fading, change
Aging-resistance	1 st class loss of color and glass
Salt spray	500

FAQ

1.What's your MOQ?
25MT, it is for one container.
2.Do you have QC teams?
Yeah, sure, our QC team is very important, they will keep the quality control for our products.
3. What's your normal delivery time?
Our delivery time about 10-20days for standard sizes, if you have other requirements like hardness and width ,it is about 20-40days. But don't worry ,we also try our best for the delivery time ,because time longer and our cost is higher.
4.Are the products tested before shipping?
Yes, all of our PPGI and GI was qualified before shipping. We test every batch every day.

Q: What are the pros with stainless steel? You don't have to oil them as much or you don't have to oil them at all?Is the rifling in the barrel typically stainless steel as well? if so, is this better accuracy or does the rifling last longer then conventional?are they worth the extra money?Thanks for any info you can provide!: stainless steel is a alloyed steel that resist rust and corrosion. show it enough salt (sea spray or sweat) and it will pit Stainless steel goes all the way through ...it's not a coating like nickle-plate. the inside of a stainless barrel is stainless and they hold up just as well as carbon steel barrels. Extra money? Stainless is pretty popular in new production and the price is not that much different than comparable guns in blue. Oil OK... they do hold up better to salt and sweat than bluing...and there is not coating or plating that can wear off. Down side... the reflect light. Some can be a bit to shiny for some situations.

Q: What is the difference between galvanized and galvalume steel coils?: Galvanized and galvalume steel coils are both types of steel coils that have undergone a coating process to enhance their durability and resistance to corrosion. However, there are distinct differences between the two. Galvanized steel coils are coated with a layer of zinc. This coating provides excellent corrosion resistance and protects the underlying steel from rust and other forms of deterioration. The zinc coating also acts as a barrier against moisture and prevents the steel from coming into direct contact with the elements. Galvanized steel coils are commonly used in applications where corrosion resistance is crucial, such as in construction, automotive manufacturing, and agricultural equipment. On the other hand, galvalume steel coils are coated with a combination of zinc and aluminum. This unique coating composition provides enhanced corrosion resistance compared to galvanized steel coils. The aluminum in the coating acts as a sacrificial anode, offering additional protection to the steel by sacrificially corroding instead. This sacrificial protection mechanism helps the underlying steel to remain intact and prevents the spread of corrosion even if the coating is damaged. Galvalume steel coils are often used in environments where extreme weather conditions and high humidity are prevalent, making them suitable for roofing, siding, and other outdoor applications. In summary, the main difference between galvanized and galvalume steel coils lies in the composition of their coatings. Galvanized steel has a zinc coating, while galvalume steel has a combination of zinc and aluminum. Galvalume steel offers superior corrosion resistance due to the sacrificial protection provided by the aluminum in the coating. The choice between the two depends on the specific application and the level of corrosion resistance required.

Q: Is steel framing eco friendly? Why or why not.: No because unlike the timber in trees, it is not a renewable resource and takes much heat energy to produce.

Q: why were guns, germs and steel absent within America?: i dont really understand this question but if it means to how it was before then it was absent because the native americans were not into technology so they obviously had no guns created that was something that they had traded to get from europe as for the germs i ddo not know about thta really except for if it means that common disease and one of the diseases most used in history books is malaysa from mosquitos but when they had traded with europe they got all sorts of diseases now for steel the only reason i remember them traveling for is for gold and i dont remember them ever looking for it until 13 colonies were established as you can see im not exactly sure about germs and steels but i know that the guns part is correct

Q: How are steel coils protected from corrosion?: Steel coils are protected from corrosion through a process called galvanization, where a protective layer of zinc is applied to the surface of the steel. This zinc coating acts as a barrier, preventing moisture and oxygen from coming into direct contact with the steel, thus inhibiting the formation of rust and corrosion.

Q: I am trying to make a homemade fender eliminator for my motorcycle and the instructions from the site I found said to use 22 gage weld steel. I went to lowes and all they had was 26 gage sheet metal. What is the difference between the two? Is weld steel less flexible?: Gauge is a measure of thickness. 19 Ga = 0.0418 20 Ga = 0.0359 22 Ga = 0.0299 Higher numbers are obviously thinner sheets. To my knowledge the way it works is going up five gauges means the thickness is reduced by half. For example 10 Ga. is 0.1345 in, while 15 Ga is 0.0673 in.

Q: What material is strongest? Human bone, steel, or concrete?: Takfam is correct, but in the loooong run, concrete will exist for thousands of years after the steel oxidized, deteriorates, and disappears. The ancients compounded concrete even before the Romans (I can't recall but during the time of the Assyrians), and concrete is almost forever.

Q: How are steel coils protected from condensation?: Steel coils are protected from condensation by applying a layer of corrosion-resistant coating, such as zinc or a polymer, on the surface. This coating acts as a barrier, preventing moisture from coming into direct contact with the steel and reducing the chances of condensation occurring. Additionally, steel coils are often stored in controlled environments with controlled humidity levels to further minimize the potential for condensation.

Q: How are steel coils coated to prevent rust and corrosion?: Steel coils are coated to prevent rust and corrosion through a process called galvanization. This involves immersing the coils in a bath of molten zinc, which forms a protective layer on the steel surface. This zinc coating acts as a barrier, preventing oxygen and moisture from coming into contact with the steel, thus reducing the risk of rust and corrosion.

Q: What are the common uses of cold rolled steel coils?: Cold rolled steel coils are commonly used in a variety of industries and applications. They are frequently utilized in the automotive industry for manufacturing parts such as automobile bodies, frames, and components. Cold rolled steel coils are also widely employed in construction for producing structural components, roofing, and siding. Additionally, they are used in the manufacturing of appliances, furniture, and various electrical products. The smooth and consistent surface of cold rolled steel coils makes them ideal for applications that require a high-quality finish, such as in the production of kitchen utensils and decorative items.

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