... steel, copper ,galvanized round, Rectangular Detailed product description Filter discs Filter discs usaged petroleum, oil refining, chemicals, light industry, medicinemetallurgy ... 0.10mm , diameter 280mm ,quantity 2000pieces Filter discs material mainly produce :AISI302,AISI304,AISI316,AISI309,nickel ... see the website How to ask the Filter discs samples?Sample fees and sizeOur company stipulated ...