colour steel roofing sheets

With high quality cold-rolled steel, galvanized steel and aluminium zinc plate for substrates, through the surface degrease, phosphating, chromate salt processing post-transform, coated organic coatings made by baking, has the advantages of high strength, bright color, durability is good wait for a characteristic. Widely used in construction, home appliances, decorate, automobile, etc. Colorsteel strength depends on the substrate materials and thickness, durability coating (galvanized amount depends on 318g/m2) and surface coating, coating has polyester, silicon resin, fluorine resin and so on sex, coating thickness reaches 25um above, there are two coating structure with baked, two besmear two baking etc, mianweihu use fixed number of year according to different environmental air for 20-30 years.