... resistance7.Low-temperature impact resistance, good performance in - 20 to 40 degrees Celsiustemperature range, winter construction safe use unaffected,8 ... of traditional comprehensive way and directional drilling pipe and tube,pipe line, etc, to an new non-excavation technology,10.The ... industry3.The field of replacement of cement and steel pipe, the iron pipe4.Landscaping field 5.Real estate and ...