PP Double Wall Corrugated Pipe Extrusion Line (SBG500) Qingdao Huasu Machinery Fabricate Co., Ltd. Base Info Model NO.:SBG500Product Type:PP PipeAutomation:AutomaticComputerized:ComputerizedCertification:CETrademark:HUASUSpecification:CE, ISOOrigin:QingdaoHS Code:84779000 Description Pre:CE UPVC Double Wall Corrugated Pipe Machine Line Next:PP Double Wall Corrugated Pipe Machinery Line (SBG400)