Automatic Elbow Welding Machine 1)Zero-balance weight design 2)Automatic root pass, fill, and cap pass NAEC---- Minimize the outdoor work, Maxmize customer's profit!Suitable for industries of: OIL AND GAS, REFINERY FACILITIES, OFFSHORE &SHIPBUILDING, POWER PLANT, ETCReference: CCC, L&T, PEC, Rotary Engineering, Petrol Steel, JSL, ETC.Automatic Elbow Welding MachineFeatures: 1Zero-balance weight ...