... colors RAL3001 Prepainted galvanized steel coilPPGI / PPGL:1.BASE MATAL:GAVANIZED STEEL SHEET,AL-ZN COATED STEEL SHEET2.THICKNESS:0. ... 4 circumferential bands in steel, galvanized metal fluted rings on inner and outer edges, galvanized metal and waterproof paper ... , retailer booth, roller shutter door Inside: Door, doorcase, light steel roof structure, folding screen, ceiling, elevator, stairway, vent ...