Horizontal circumferential welder. With the following specs: Applicable for “top-to-bottom” and “bottom-to-top “tank construction inside & outside welding of girth seam. Suitable for tank in 9m diameter or larger. Adjustable welding-traveling frame height for tank shell plate 1.6m to 2.8m in width (other 3m, 3.2m is optional). Suitable for tank plate wall thickness is from 8mm to 50mm for “top-to-bottom” and from 10mm to 50mm for “bottom to-top”. The cross slide of welding head can move 10cm horizontal and 10cm vertical. Single sided frame weight: approximately 650 Kg. Motor frequency inverter drive system Weatherproof control box with digital display for welding speed. Travel speed: 0~2200mm/min. Beveled gear drive reducer, good locking ability in both directions Large diameter (Φ 150mm) steel roller flux support belt to allow flux recycling. Electrical flux Lifting winch：160kg loading, lift flux up to 30m off the ground. Safety cage, ergonomically designed ladder handrail, operator seat. Fire resistant / weatherproof curtain. 100x 100 mm finely adjustable manual cross slide. Standard 380V/3ph/50 Hz input (other optional). Power source storage (weather proof). 50 m long Power cable for operating frame. Heavy duty blower type flux recovery system with filter.