As one of the core business of Zhongyun Group, the two subsidiaries - Weifang Zhongyun Machinery Co., Ltd. and Weifang Zhongyun Science and Research Co., Ltd. are specialized in developing and manufacturing all kinds of plastic pipe machines. Both of the two companies are the leading manufacturer of plastic pipe machines and enjoy a high reputation in China, with the advanced technology and remarkable quality, the plastic pipe production line has been widely recognized by the users and becoming the only owner of “China Well-known Trademark” in plastic pipe machine industry. Its current main scope of business is developing and manufacturing series of high-speed extrusion line for PE/PP double wall corrugated pipe, series of standard extrusion line for PE/PP double wall corrugated pipe, series of extrusion line for high stiffness composite spiral PE pipe, series of extrusion line for spiral corrugated plastic pipe, series of extrusion line for steel-plastic composite reinforced pipe, series of polyolefin (PE/PP/PEX/PERT/PB) pipe extrusion line.
Zhongyun Machinery and Zhongyun S&R were certified for quality system of ISO9001 and the products were certified by CE. We can offer a complete service on product design, manufacture and after-sales care. Zhongyun Machinery and Zhongyun S&R have received many awards in recognition of its advanced technology and well management．
As the top professional manufacturers of plastic pipe machines in China, Zhongyun Machinery and Zhongyun S&R have devoted itself to research and develop new technology on machinery. We combine the most advanced international technology with our own innovative technology, and then develop more than ten advanced key technologies and more than 100 patents. Many awards were conferred by national authority for the advanced technologies, such as:extrusion lines for PE/PP/PVC Double Wall Corrugated Pipe, Al-plastics Composite Pipe, PP-R Pipe, One Step PEX Pipe and UHMW-PE Pipe, and all the projects above were included in the national crucial scientific and technological achievements promotion plan, the national Torch Program project and so on. Both the configurations and technical parameter of our plastic pipe machines reach the international standards, some performance even has surpass the European production line. Our products not only lead the domestic market,but also sell well in more than forty countries, such as Russia, Japan, Iran, Iraq, Romania, Kosovo, Morocco, Ukraine, Turkey, Poland, Egypt, Finland, Peru, Argentina, Kuwait and so on.