China 18 28 Gauge Trapezoid Prepainted Galvanized Steel Roofing Sheet in Africa

Prepainted Trapezoidal Galvanized Roofing Sheet

1.Introduction:
Prepainted Trapezoid Steel Roofing Sheet is very widely used in Africa or South America. It has advantages of light weight, corrosion resistant, wind proof, fire proof and long-life service. They can be used as roofing, wall panel, ceiling, wall cladding, etc. we have many years of manufacturing and exporting experience, our products have beed sold to America, Germany, France, Ireland, Egypt, Africa, India, etc. our customers are satisfied with our products, for we can offer our customers products with good quality and competitive factory price.
2.Popular size:
Raw material 762mm to 665mm(after corrugated) and 9 waves
Raw material 900mm to 800mm(after corrugated) and 11 waves
Raw material 1000mm to 900mm(after corrugated) and 12 or 14 waves
Special size can be produced as per customer's requirement
3.Advantage:
1). The acid and alkali resistant, good acid and alkali, corrosion resistance.Proved by the experiment, respectively, in the ph = 1 in sulfuric acid solution and 10% naoh solution for 72 hours, no corrosion even at high ph environment also can be at ease use.
2). Strong waterproof: good resistance to water, the product material itself poorly soluble in water, bibulous rate is 9% or less, far higher than the national standard (12%) or less.
3). Super bending force.This product is transverse bending force of 4229 n, the longitudinal bending force of 486 n, far higher than the national standard requirement (horizontal or 2400 n, vertical 300 n or higher).This product from 1.5 meters, can withstand pressure of 100 kg.
4). Frost resistance to cold: magnesium oxide content in magnesium board is as high as 50%, the coefficient of thermal conductivity is only 0.070, and in - 40 ºC cold conditions without any deformation.
5). Fire resistance to high temperature: this product insulation can reach 10 ~ 12 ºC (indoor and outdoor temperature difference), the reason is adopted by magnesium oxide, high calcium powder, inorganic materials such as magnesium oxide white amorphous powder, non-toxic, tasteless, odourless, relative density of 3.85 (25 ºC), melting point 2852 ºC, boiling point 3600 ºC, belong to national a-class non-combustible material, such as commonly used in the manufacture of refractory brick and refractory tubes, crucible, furnaces, non-ferrous metal smelting furnace, cement kiln, and so on, belong to the super grade refractory (national standard above 2000 ºC).
6). Good anti-aging effect. slowing down the speed of material aging and weather resistance, increase the service life of the material, the appearance is beautiful and high-grade.
4.Package:
Standard seaworthy export packing:3 layers of packing,inside is kraft paper,water plastic film is in the middle and outside GI steel sheet to be covered by steel strips with lock,with inner coil sleeve.

Technique of production

Double painting and double baking process
Double painting and one baking processStandardAISI,ASTM,GB,JISMaterialSGCC,DX51D,DX52D,DX53DBrandTIGA Steel Thickness0.14-0.8mm(0.14-0.8mm also available)Width665-1070mmLength2000-5000 meters(common)Tolerance+/-0.02mmZinc coating30-275g/m2PaintingTop: 14 to 25 micron/Back: 7-15 micronSurface coating type

PE(regular), SMP, HDP, PVDF

Surface coating colorRAL color or as customers' samplePackage Weight3-5t or as Customers' RequirementCertificationISO 9001-2008,SGS,CE,BVMOQ20 Tons (in one 20ft FCL)Delivery15-25 daysMonthly Output10000 tonsPaymentT/T, L/C, Western Union, PaypalSurface typeMatte/Filmed/Printed/Embossed/Normal