Zhengzhou, Henan Haotong Pipe Co., Ltd., is a large Central Plains Municipal sewer HDPE double wall corrugated pipe production enterprises Tensile strength (MPa) ≥ 215 Elongation at break (%) ≥ 3506 maximum towing load (N) ≥ 80007 Cold bending radius (mm) 4008 Ring stiffness (KN/m2) ≥ 509 Test flat vertical deformation of the outer diameter of the pressure to 50% of the original outer diameter of the bellows u-pvc processed immediately unloading the specimen is not broken , not hierarchical. 10 Recovery rate (%) in the vertical direction to the outer diameter of the pressure deformation of 50% of the original outer diameter of the u-pvc bellows parameter u-pvc profile unloading bellows customized sample is not broken, not hierarchical, 10min outside diameter can naturally be restored to more than the original 85%. Zhengzhou Haotong Pipe Industry Co., u-pvc bellows, the Central Plains relatively large municipal sewer HDPE double wall corrugated pipe production enterprises and one of China's living facilities rather late, our thinking is relatively backward in environmental protection, large Use the flat part of the interface is still cement pipes. And our research is not enough technically mature. Because plastic underground drainage outfall design and construction and acceptance need a new specification. But in recent years, with the change of environmental advocates and technology. In terms of the use of plastic pipe, China also began to use more and more. [U-pvc corrugated pipe], u-pvc bellows custom, ho-ho-pipe industry provided by the pipe industry. Welcome to consult Pipe Co., Ltd., Zhengzhou Haotong (www.zzhtgy.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Zhang Kuaiyong