... forming machine, riveting machine, Pittsburgh seam lock machine. Hydraulic section steel bending machine, metal sheet flange forming machine, TDF hydraulic folder, auto cutting to length line, pipe bending machine ... -21-57841819Tel:+86-21-57842040Phone:+86-13817091187 flexible duct connector machine,soft connector duct/pipe,tube connector machine,round duct connector,duct connector maker