PP Double Wall Corrugated Pipe Extrusion Line (SBG315) Qingdao Huasu Machinery Fabricate Co., Ltd. Base Info Model NO.:SBG315Product Type:PP PipeAutomation:AutomaticComputerized:ComputerizedCertification:CETrademark:HUASUSpecification:CE, ISO9000Origin:QingdaoHS Code:84779000 Description Pre:PP Double Wall Corrugated Pipe Extrusion Line (SBG400) Next:PVC/PP/PE Double Wall Corrugated Pipe Machine Line (SBG400)