PVC Double Wall Corrugated Pipe Machine Line (SBG500) 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:PE Gas/ Water Supply Pipe Extruder Line (SRQG160) Next:PVC Double Wall Corrugated Pipe Extrusion Line (SBG 200)