filter media Perforated sheet Materials: Low Carbon Steel Plate, Stainless Steel Plate, Aluminium Plate, Alloy Plate, etc. filter media Pre-cast Concrete Perforated Slab ,punching hole net Materials: Low Carbon Steel Plate, Stainless Steel Plate, Aluminium Plate, Alloy Plate, etc.Weaving and characteristics: It is punched to meshes. With the character of winding-resisting, Ageing-resisting, flat ...