Haomei aluminum roof coil stock, usually color coated, can be of 1xxx or 3xxx series. 3003, 3004 or 3105 aluminum coil stock is commonly used for conventional roof slabs, while 1100 or 3003 is for embossed aluminum roofing coils. The regular widths for smooth-surfaced roof coils include 1000mm, 600mm and 575mm, and embossed ones from 1200mm to 1600mm. Specific width …