SBG 500 UPVC Double Wall Corrugated Pipe Extruder Line Qingdao Huasu Machinery Fabricate Co., Ltd. Base Info Model NO.:SBG500Product Type:PVC PipeAutomation:AutomaticComputerized:ComputerizedCertification:CETrademark:HUASUSpecification:CE, ISO9000Origin:QingdaoHS Code:84779000 Description Pre:PVC Double Wall Corrugated Pipe Production Line (SBG400) Next:PP Double Wall Corrugated Pipe Extrusion Line (SBG400)