PVC Double Wall Corrugated Tube Extrusion Line (SBG500) Qingdao Huasu Machinery Fabricate Co., Ltd. Base Info Model NO.:SBG500Product Type:PVC PipeAutomation:AutomaticComputerized:ComputerizedCertification:CEDiameter:200-500mmTrademark:HUASUSpecification:CE, ISO9000Origin:Qingdao, ChinaHS Code:84772090 Description Pre:PE Double Layer Corrugated Pipe Extrusion Machine (SBG400) Next:PPR Tube Production Line (SRQG)