Qingdao Yifeng Plastic Machinery Co., Ltd.is specialized in the design,manufacturer of PVC Multifunctional Huge Calibre Pipe Production Line. Mainly used to produce u-pvc,c-pvc huge calibre pipe for supply and drain water.Composed of double screw extruder,pipe die,vacuum sizing device,multi-pedrails hauling machine,cutting machine and stacker. Choose conical or parallel double screw extruder according to different demands. Qingdao Yifeng Plastic Machinery Co., Ltd. principal products（Website：http://www.yifengjixie.com）HDPE vacuum corrugated pipe unit 、HDPE carbon fiber spiral coil unit、PVC plastic hard tube extruding production line、PE large-caliber insulated pipe production line 、Plastic extruding corrugated pipe unit with single-wall、PE and PP plastic thick board (slice) extruding production line、Plastic grid plate extruding production line、PE/PP-R/PEX fuel gas/flow pipe production line（Website：http://www.yifengjixie.com）