... steel, copper ,galvanized round, Rectangular Detailed product description Filter discs Filter discs usaged petroleum, oil refining, chemicals, light industry, ... diameter 0.10mm , diameter 280mm ,quantity 2000pieces Filter discs material mainly produce :AISI302,AISI304,AISI316,AISI309, ... , customer need advance transfer the postage to the bank account the sample department assign . Later the sample ...