Acid Rain Resistant ASA Synthetic Resin Roof Tile Steel Structure Workshop Roof for Production Hall A steel structure workshop roof sits over a production hall that runs acidic wash and exhaust through the week, so the sheet has to survive both the weather and the plant air. Product name HENCING ASA synthetic resin tile Product color Brick Red, Purplish Red, Dark Green,Bule,Grey Length Customized Product thickness 2.5mm/2.8mm/3.0mm Product hight 30mm Pitch distance 160mm