This Machine Composed By Main Machine Head , Tractive Body And Feeding Shelf. Tractive Body Was Moved By Collet In Small Vehicle Nipping The Steel Pole’s Collet. When The Small Vehicle Moved, Driven Steel Pole, From Small Collet To Big Collet, Regularity Moved. The Big Side Of The Steel Pole Was Hold By Feeding Vehicle, Force Automatic Sewing From Head Of Machine To Steerable Wheel. At One Time, The Welding Machine Starts Welding. This Machine Adopt Multiple Wire Submerged Arc Welding, Solder Was Reclaimed Automatic. Welding Line Was Symmetrical And Slinky. It Has Strong Filter, Forming One Time, And Be With High Welding Efficiency. The Speed Of Welding Achieve 2 To 3 Meters Per Minutes, Is About 3 Times Of The Gas Welding .The Cost Of The Welding Is Lower Than Gas Welding. It Is With Speedy Welding, High Efficiency, And Lowest Price In China Light Poles Industry Now.