... , G14, G16, G18, G25, G40, G50, G80, G120 sand blasting, surface cleaning (1)Company Introduction TAA Metal is one of the ... board, steel material,steel structure. Pre-treatment: Pre-treatment of surface, steel board, profile steel, steel structure, before painting or coating ... . d) Packing: 25kg/bag, 40 bags per pallet or as required. ...