Features: 1) OEM Customized Exhaust Pipe 2) Installed in vent-pipe between engine vent-pipe and muffler 3) Makes exhaust system assume a flexibility link and thus it can absorb shock and reduce noise 4) Convenient to install and will increase life of exhaust anechoic systems 5) If it is used for the exhaust system of a car, the main mode is double corrugated hose and external stainless braided wire covering and is structured such that both ends are straight section with card ring outside 6) Nominal diameters: 40 - 90mm 7) Can be equipped with inside lining (braided covering or twin pipe inside lining) 8) Connected by flange and welding and is installed in the vent-pipe between muffler 9) If used for the exhaust system of a truck, passenger train or bus, it is used for the high temperature part of the vent-pipe 10) Can absorb and compensate for vent-pipe 11) Expands with heat and contracts with cold, preventing steel breach 12) Connected by flange and welding 13) Diameter: between dia60 - dia125mm 14) It also can be customized and designed according to customers\'\' requirements. We will meet our customers\'\' demand