Filter Element, End Cover, Hydraulic Oil Filter Element manufacturer / supplier in China, offering Ext Diam. 21mm Th. 1.2mm Perforation R2 T5 Continuous Welding Tube, Thickness 1.2mm Ext Diam. 21mm Continuous Welding Perforated Tube, Th. 1.2mm Stainless Steel Inox AISI 316ext Diam. 21mm Th. 1.2mm Perforation R2 T5 Continuous Welding Perforated Tube and so on.