| This product is manufactured by the metal galvanization corrugated pipe as  inside layer | 
                                
                                  | and outer layer is extrused soft PVC compounding, through the special  formula and the | 
                                
                                  | craft processing allocation the steel and plastics to combine to form a body.has  the | 
                                
                                  | flexibility good, the waterproofing, guards against the oil, guards against the mouse, the | 
                                
                                  | bevelling radius small, the insulating property good, being flame-resistant, the tensile | 
                                
                                  | strength  high, may absorb the migration and the vibratility effectively, non-toxic, | 
                                
                                  | characteristics  and so on environmental protection, may again circulate the use, the | 
                                
                                  | adaptation environment: -10℃-70℃. | 
                                
                                  | This product is suitable for the mechanical device, electrical fittings  threading as | 
                                
                                  | well as the oil gas, the moisture heavy environment place use |