... : CCC, L&T, PEC, Rotary Engineering, Petrol Steel, JSL, CNPC, SINOPEC, CNOOC, CNCEC, etc.Automatic Tank Welding Machine(Bottom ... 3(CNC)- Butt/corner sub-arc automatic welding machineFeatures: 1Max. Efficiency of welding machines: 30 times of manual welding(AGW ... tank erection, we can provide not only high efficient automatic machine, but also installation; Commission service, site construction ...