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: hi to every one I need to konw moer about steel and iron industry (process) thank you in advance for your intresting: Primary Steel Making first Iron ore Coke Lime stone are mined and then took to the steel plant and put in the top off a blast furnace and sinks down to the bottom off the blast furnace and turns into molten iron. Once this process has been done it is then transferred to a BOS (Basic Oxygen Steel Making) this is then poured from a ladle into the BOS and a Lance is inserted into the BOS and pure oxygen is blown into the BOS for about 30 min and turns into steel.

Q: What are the main factors that affect the formability of steel coils?: The main factors that affect the formability of steel coils include the steel's composition, mechanical properties, thickness, temperature, and lubrication.

Q: How are steel coils used in the production of steel connectors?: Steel coils are used in the production of steel connectors by being fed into a machine where they are unwound and straightened. The straightened steel is then cut into appropriate lengths and shaped into the desired connector form. This process helps ensure consistency, strength, and efficiency in manufacturing steel connectors.

Q: When I took guitar lessons, I found that the Nylon strings are easier for me, but I love the sound of steel strings. Now, I have my own acoustic guitar, and 2 strings broke off, so I'm getting strings today. I'm not sure if Nylon strings would 'fit' on my guitar, and it's to soft of a noise. But the steel are much better sounding, but it's a little bit harder to push the string down on the fret. Which do you prefer, why?(:: You cannot put nylon strings on a steel-stringed guitar. If you find that the steel strings are too hard, get a lighter gauge which will ease up the tension. This way you can build up finger strength gradually as well as build up the callouses on your finger. You can always get a thicker gauge string later on if you want a deeper sound.

Q: How are steel coils used in the manufacturing of suspension arms?: Steel coils are used in the manufacturing of suspension arms as they provide the necessary strength and flexibility to absorb shocks and vibrations, ensuring a smooth ride. These coils, known as coil springs, are typically mounted between the suspension arm and the vehicle's chassis, supporting the weight of the vehicle and allowing for controlled movement and suspension travel. By compressing and expanding, steel coils help absorb the impact of bumps and uneven road surfaces, providing stability and improving overall handling and comfort.

Q: What are the common defects in steel coil finishes?: Steel coil finishes can be affected by various defects that can impact both their appearance and functionality. Before using or selling the coil, these defects may need to be addressed. One common defect is coil breaks, where the steel strip breaks during winding or unwinding. If not dealt with, this defect can cause a discontinuity in the coil's surface and potentially lead to further damage. Another defect is edge wave, which refers to a distortion or waviness at the edges of the coil. This can occur during the rolling or cooling process and can affect the coil's flatness and uniformity. Corrosion is another issue that can arise if steel coils are not properly protected or stored. This can result in rust and degradation of the steel, impacting its strength and appearance. Streaks and stains can appear on the surface of steel coils due to improper cleaning or contamination during production. These defects can affect the aesthetic appearance of the steel and may need to be addressed before use. Scratches and dents can occur during handling, transportation, or storage of steel coils. These defects can impact the flatness and surface quality of the steel and may require repairs or adjustments. If a coating or paint is applied to the steel coil, several defects can arise, including blistering, peeling, or uneven application. These coating defects can affect the durability and appearance of the steel. It's important to note that the severity of these defects can vary, and different methods of repair or mitigation may be needed. Regular inspections and quality control measures can help to identify and address these defects before they become more significant issues.

Q: Can steel coils be used in structural applications?: Yes, steel coils can be used in structural applications. Steel coils are widely used in the construction industry for various structural applications such as building frames, bridges, and infrastructure projects. The coils can be processed and formed into different shapes and sizes to meet the specific requirements of the structure, providing strength, durability, and structural integrity.

Q: Ive been playing with my ping i3 graphite irons for 6 years now and some days i can hit it and some days i cant. Then i tried out my friends irons the other day and he had steel and i was hitting the ball anywhere i wanted it to go..Is that a fluke or is steel irons just better than shaft? I was thinking about trading my graphites for steel, is that a good idea??: Graphite is a lot lighter and will allow you to generate more swing speed and probably greater distance. I hit my graphite clubs about one club longer than my steel shafts. But, my steel shafts are far more accurate. I find I hit a lot more greens in regulation using my steel shafted irons than I do with my graphites. Since accuracy is far more important than distance for most people, I choose the steel shafted irons most of the time. You will NEVER see a professional or a low handicapper using graphite irons for this reason.

Q: What brand steel tapes are of good quality?: Durable durable depends on your personal use frequency, the high frequency nature is easy to wear, resulting in scale. If you like fuzzy units if buying tape need verification it is best to buy the Great Wall Seiko goods, because the time to measure the number of verification inspection of steel tape, basically qualified rate of the Great Wall Seiko steel tape can reach one hundred percent.

Q: How are steel coils inspected for quality control purposes?: Steel coils are inspected for quality control purposes through a series of tests and checks. This may include visual inspection to detect any surface defects, such as scratches or dents. Additionally, measurements and tests are conducted to ensure dimensional accuracy, such as thickness, width, and weight. Non-destructive testing methods, such as magnetic particle testing or ultrasonic testing, are also employed to identify any internal defects, like cracks or voids. These comprehensive inspections help ensure that steel coils meet the required quality standards before they are used in various applications.

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