Double Tandem automatic shielded arc welding gantry
Double Tandem automatic shielded arc welding gantry has double tandem USA-Lincoln DC and AD submerged arc welding machine at left and right sides and also has individual control and guide system which can complete the filler welding rapidly. It has good penetrability and beautiful weld bead; it is applicable to box column welding.

  1. Applicable thickness: 16~150mm.
  2. Applicable material: Soft steel and 50kg high tensile strength steel.
  3. Weld bead shape: Square and rectangle.
  4. Applicable length of weld bead: The longest 1500mm.
  5. Joint shape: T-joint and butt joint.
  6. Use USA-Lincoln DC and gas shielded arc welding machine to make welding system stably.
  Product Specifications
Basic technology parameter:
  1. The dimension of processed material
  • The width of flange plate (a): 300mm~1500mm
  • The height of web (b): 300mm~1500mm
  • The length of section: 4000mm~15000mm
  • The weight of section: Max 30 Ton
  1. Operating parameter
  • Track gauge: 3000 mm
  • Speed: 0- 5500mm/min
  • Distance: 18000mm 
  1. Equipment structure
      Gantry part
  • Moving electric motor (DC motor 1 HP + reducer): Controlled by a single controller with two DC motors,which connected to reducer and the wheels transmission system directly, that makes the trolley bilateral synchronous transmission and run stably while welding. The design reduced unnecessary drive parts and it is easier to maintain.
  • Lifting mechanism (Move left and right electric adjustable device 1/4 HP + AC lifting motor 1/2HP): The trolley cross beam has two box beam welding guidance, which use electric lifting and left and right electric moving. The welding gun with gravity pressure guiding device to make the welding gun can move vertical and horizontal along the weld bead. It also has fine adjustment function (±50MM) and angle fine adjustment. It is easier for operators welding.
  • Gantry control system: The transmission and welding function of trolley focus on one dashboard. Place the dashboard to the right side of trolley is easier to control by operators and the walking speed show with digital display.
  • Four wire trays: The Trolley can hold four 750 LBS (350KGS) trays, provide continuous welding use and reduce the times to replace drums. (The welding materials provided by customer).
  • Flux recycling system: The trolley prepares two sets of flux recycling system. (1-1/2 HP Blower) (Long Well's product)
  1. Welding equipment
      Welder power
  • DC-1500 Power unit K-1383 380/40/3/50/60 (USA-LINCOLN)
  • AC-1200 K-1382-1 Power unit 380/440/1/50/60 (USA-LINCOLN)
      Wire delivery: USA-LINCOLN
  • NA-3S K-210-2 Operating box (USA-LINCOLN)
  • K-388-1 Operating box (USA-LINCOLN)
  • NA-3SF/NA-4F Head K209A Welding head (USA-LINCOLN)
      The twice electric welder lateral welder cable. (Taiwan)
      The electric welder earthed cable. (Taiwan)
      The twice electric welder lateral controlled cable and other pipes.  (Taiwan)