SBKJ Spiral Tube Former Factory

SBKJ is the biggest air duct machinery manufacturer in china,We make round and square duct machines for heating and ventilation system; We already had our customers in Russia,Brazil,USA,Switzerland,New Zealand,Canada,Australia,India,Middle east ,South Africa?.. Here is some parts of our machinery list, 1:spiral tube former 2:Ovalizer 3:Elbow maker 4:Elbow seam welder 5:Stitch welder 6:Aluminum duct former 7:Aluminum flexible tube former 8:Plasma cutter 9:Bending machine 10:TDC/TDF flange forming machine 11:Automatic line 1,2,3,4,5 12:Lock former 13:Floder 14:Shearing machine 15?Corner inserter 16?Floor panel roll forming machine 17:Cable tray roll forming machine 18:Noise barriers roll forming machine 19:C channel roll forming machine 20:C&Z shape purlin interexchangeable roll forming machine 21:C shape purlin roll forming machine 22:Z shape purlin roll forming machine 23:Light steel keel roll forming machine 24:Electric cabinet frame roll forming machine 25:Side board of truck roll forming machine 26:Storage rack roll forming machine 27:Fire damper roll forming machine 28:Drainpipe roll forming machine 29:Highway guardrail roll forming machine 30:Roller shutter roll forming machine 31:Anode plate roll forming machine 32:Roof tile roll forming machine 33:Steel silo forming machine 34:Optional punching device 35:Optional feeding device 36:Optional leveler 37:Optional de-coiling device 38:CNC plasma cutting machine 39:Steel coil double-covering line 40:Steel coil covering and coating line