Qingdao Yifeng Plastic Machinery Co., Ltd.is specialized in the design,manufacturer of PVC Single wall corrugation pipe production line,the line shall be used to produce small diameter single wall corrugation pipe with the raw materials of PVC,PP and PE. Through the relevant mold to finalize the shape at one time to make up corrugation pipe with smooth inside and outside surface, even ripple. Used as wire and cable passing pipe ,washing machine drain pipe,dust collector pipe and ventiduct; Small size corrugation pipe of 4-6.7 are used in car. Qingdao Yifeng Plastic Machinery Co., Ltd. principal products（Website：http://www.yifengjixie.com/en）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（Website http://www.yifengjixie.com/en）