Qingdao Yifeng Plastic Machinery Co., Ltd.is specialized in the design,manufacturer of Twin Pipe Extrusion Production Line. First class of twin pipe die was designed with many years experience. Perfect twin pipe vacuum sizing system. Controlled independently unitary structure of twin pipe hauling mechanism and synchronous cutting device. Cooperate with accurate and random set and stacked device. 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、PVC/PE/PP plastic pelletizing unit（Website：http://www.yifengjixie.com）