Zhengzhou, Henan Haotong Pipe Co., Ltd., is the Central Plains municipal drains relatively large one double-wall corrugated HDPE pipe manufacturer from the early 1980s, the state vigorously promote the use of upvc pipes HDPE double wall corrugated pipe news, and to develop a series of policies, systems, standards, HDPE double wall corrugated pipe, and has accumulated a lot of experience. Development today, already has a complete product standards, testing methods standards and testing methods, technical specifications and other construction projects, thus unifying the product specifications size and quality indicators HDPE double wall corrugated pipe buy, and product interchangeability. This shows that the development of pvc water pipe has entered a mature stage HDPE double wall corrugated pipe materials, product quality and construction quality are guaranteed, thus ensuring the use of effects pvc water pipe. The international standard for water supply pe pipe (ISO4427) officially released until 1996. Zhengzhou, Henan Haotong Pipe Co., Ltd., is a large Central Plains Municipal sewer HDPE double wall corrugated pipe production enterprises are now a wide variety of pipe classes, should be used to do seven holes plum pipe, large diameter bellows are in use pe pipe, pe water pipe can withstand so much ground load it, test and validate PE pipe for pipelines are generally considered resistant to pressure test loads are all buried pipelines should be considered class HDPE double wall corrugated pipe , ho-Pipe, HDPE double wall corrugated pipe is provided by ho-pipe industry. Ho-Pipe Co., Ltd., Zhengzhou (www.zzhtgy.com) in hdpe double wall corrugated pipe, pvc double wall corrugated pipe, pe pipes, pvc drainage and other industries have high visibility, integrity management, both quality of service, welcome to inquire , or consult our "Business League call" it!