Single-Wall Corrugated Pipe Machine (SJDBGZ) Qingdao Tongsan Plastic Machinery Co., Ltd. Base Info Model NO.:SJDBGZType:Pipe ExtruderScrew:Single-ScrewTrademark:TSSpecification:CEOrigin:Shandong, ChinaHS Code:84772090 Description Pre:Pipe Extruder (SJDKGZ) Next:Spiral Pipe Extruder (SJTSG)