RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

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50 m.t.
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28000 m.t./month

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Structure of RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

  RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

Description of RAL Scale Z65 Prepainted Rolled Steel Coil for Construction Roofing
Prepainted Rolled steel Coil 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. Aluminum zinc coils 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. 

Main Feature of RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

1.Corrosion resistance: It mainly depends on the aluminum protection. When the zinc being worn, the aluminum will  form a dense layer of aluminum oxide, resist corrosion material to prevent further corrosion inside. 
2. Heat resistance: Aluminum zinc alloy steel sheet has excellent heat resistance, can withstand high temperatures over 300 centigrade, and is similar with aluminized steel high temperature oxidation resistance. It often used in chimney pipes, ovens, fluorescent lighting device and the device cover. 
3. Heat reflective: Galvanized steel plate heat-reflective high rate is twice as galvanized steel, often used to make insulation materials. 
4. Economy: Because density of 55% AL-Zn is smaller than the density of Zn, so in the same weight and thickness of Galvanized zinc layer, aluminum-zinc steel plate is larger area more than 3% of galvanized steel sheet. 

RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

Applications of RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing                                           PPGI is featured with light- good looking and anticorrosion. It can be processed directly, mainly used for construction industry, home electronic apparatus industry, electronic apparatus industry, furniture industry and transportation.It is ideal for a wide range of applications,, such as pre-engineered buildings, architectural panels, roofing, siding, cladding, and many other building components.and also used back plate of appliance; wide range of construction, furniture industry, transportation industry, etc.

 RAL Scale Z30 Prepainted Rolled Steel Coil for Construction RoofingSpecifications of RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing


RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

Material Grade

SGCC / SGCH  / DX51D+AZ, etc






Thickness: +/-0.02mm , Width:+/-2mm




Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume


Dried, Chromated, Unoiled


Regular spangle , small spangle, zero spangle


508MM 610MM

Coil weight

25MT max

Export package

Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed

 FAQ of RAL Scale Z30 Prepainted Rolled Steel Coil for Construction Roofing

We have organized several common questions for our clients,may help you sincerely:

1. What is the minimum order quantity ? 

Our MOQ is 50mt for each color. And we could give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your can  offer the better price we can provide.

2. How long can we receive the product after purchasing?

Usually within thirty working days after received buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15- 25 days, but the shipment will depend on the vessel situation.

3. What is your package of the products?

Package: Sea worthy Export Packing  Standard export and seaworthy packing. (waterproof paper and metal sheet protection with fluted rings at inner and outer edges, 4 eye bands and 4 circumferential bands fasten the coil)



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Q:Why cold rolled stainless steel sheet is lower than cold rolled stainless steel coil?
304 stainless steel coil 2.0*1219*C spot price 18 thousand and 100 / ton, general tolerance at about 1.8mm.Coil price * actual thickness / reference thickness = flat price1.81*1.8/2=16.29
Q:Is rail steel like other types of steel?
Hoghead has it top, it particularly is quite gentle steel, every time they war harder steel it does no longer arise to the stress and breaks greater with no difficulty. Rail, ordinary because it sort of feels can get corrugated and tough comparable as a dirt street and needs to be reground each so often to reshape the coolest part of the rail. Rust isn't a difficulty on a song in use so stainless could be a pointless cost. additionally, in extreme placed on places, terrific welding crews are available in in upload new cloth to the main worn areas, as in switches and then regrind it to the right profile, gentle steel accepts this plenty greater efficient than a harder steel could.
Q:Brass or steel cases through an AR-15?
Steel cases won't hurt your AR, they just don't expand to seal the chamber as well as brass cases, causing increased fouling of the chamber that leads to failures to extract. If you use steel cased, clean well, and use a chamber brush. You can switch back and forth without harm.
Q:Angular Velocity of a Steel Ball after a Collision?
You need to do conservation of angular momentum about the steel ball's axis. Angular momentum = I.ω The steel ball's initial ω = 5 rev/s = 5*2pi rad/s = 31.4 rad/s The steel ball's moment of inertia I = (2/5)*m*r^2 = 40*25 kg.m^2 = 1000 kg.m^2 The marble's initial ω = v / r where r is the perpendicular distance from the steel ball's axis You need to look at the diagram for this. The marble's I about the steel ball's axis is I = m*r^2 where r is the same as above. (marble is treated as a point mass). Then work out the total initial ang. momentum = final ang. momentum and solve for ω...
Q:Is there Non-Corrosive stainless steel?
All stainless steel will corrode in certain conditions. Some varieties are worse than others. For instance grade 409 which is used for car exhausts (and other things) will rust. For the most suitable grade call a local steel supplier which carries stainless steel. Some of these companies will have a catalog of available grades and the appropriate uses. It would probably help to let them know what types of chemicals are present and what temperature the water is. You may want to call several suppliers, the quality of answer you get may vary quite a bit from company to company. The cost of exotic grades of stainless can be quite high. you may have to use a less appropriate grade if you can't justify the cost. If corrosion is a very serious concern for this be forewarned that stainless steels can be contaminated by contact with carbon steel (ordinary steel). I have seen rust form on stainless steel after a carbon steel bar was set down on the stainless steel. The carbon steel will leave trace amounts under prolonged contact. I have even seen signs of contamination of stainless steel direct from the supplier.
Q:Stainless steel or aluminum for campfire cooking?
I added a few more pieces. Love the glass lids. I have a couple pieces of Le Creuset, but it is too heavy even before the food goes in and I don't like dealing with it. I regret buying the Le Creuset now---should have just bought the Lodge Enameled Cast Iron stuff for about a fourth of the cost. I do have a Lodge 5 qt. dutch oven that I use to deep fry and it is a nice piece and easy to clean. The LC dutch oven does a nice job when I want stew-type recipes.
Q:What are the characteristic of CORTON STEEL?
*It is Corten steel.Grade A B. *Weathering steel, best-known under the trademark COR-TEN steel, is a group of steel alloys which were developed to obviate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years. United States Steel Corporation (USS) holds the registered trademark on the name COR-TEN. Although USS sold its discrete plate business to International Steel Group (now Arcelor-Mittal) in 2003, it still sells COR-TEN branded material in strip-mill plate and sheet forms. In some areas it may be known without the hyphen as Corten steel. The original COR-TEN received the standard designation A242 (COR-TEN A) from the ASTM International standards group. Newer ASTM grades are A588 (COR-TEN B) and A606 for thin sheet. All alloys are in common production and use. It is a weather-resistant steel which is used in containers and hot flue gas line. The American Corten A Steel has a composition of C, 0.12; Si, 0.5; Cu, 0.5; Cr, 0.8; P, 0.1 and Mn, 0.5%. Although the tensile strength is less than 494 MPa the yield is in the region of 371 MPa. The combination of copper and phosphorus also increases the resistance to atmospheric corrosion which is important when thinner plates are used. The original steel A suffers a decrease in yield strength and notch ductility in thickness over 25 mm, to overcome which Corten B was developed-C 0.14; P 0.04; Mn 1.1; Cr 0.5; Cu 0.4; V 0.1; Bol Al 0.02. *COR-TEN A applies to plates up to 12.5mm in thickness, COR-TEN B applies to plates up to 50mm in thickness. *It has been used in bridge and other large structural applications such as the New River Gorge Bridge, the newer span of the Newburgh-Beacon Bridge, and the creation of the Australian Centre for Contemporary Art (ACCA). It is very widely used in marine transportation, in the construction of shipping containers.
Q:Are solid steel or synthetic violin strings better?
Steel okorder.com/
Q:What is harder Gold or steel?
steel. gold is pretty soft.
Q:Steel pipe info please...?
Here are a few quick things for you to check into on your own. First, there are a wide variety of materials that pipes can be made from such as carbon steel, stainless steel, aluminum, etc. Second, pipes can be of welded construction or seamless. Sometimes seamless pipes are called DOM (drawn over mandrel). Third, with the types of each pipe are a variety of grades. For example, steel pipe can be listed as A53, A106, A500, A513, etc. Each one of these grades has a different application because of their chemical composition and method of manufacture which effects its strength. Fourth, there is a difference between a 4 pipe and a 4 tube. Last, pipes for fluids are typically threaded with NPT threads. These threads are tapered so that as the pipes are screwed together they become tighter and therefore leak proof. I probably over complicated things but I hope this helped you. Good luck.

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