... Any RAL Color ppgi1, Introduction:Color coated steel coils(sheets), i.e. PPGI, also called prepainted steel coils(sheets), are made of ... government. 4, Appliance:Thanks to the above characteristics, color coated steel coils and sheets are widly used in construction, furniture industry ... ,ect.. 5, eye bands and 4 circumferential bands in steel, galvanized metal fluted rings on inner and outer edges, ...