... , CNPC, SINOPEC, CNOOC, CNCEC, etc.Automatic Tank Welding Machine(Bottom to Top);Automatic Tank Welder(Bottom up)Configurations:- AGW ... of welding machines: 30 times of manual welding(AGW), 50 times of manual welding(EGW)2AGW adopts sub-arc welding ... tank erection, we can provide not only high efficient automatic machine, but also installation; Commission service, site construction instructing, ...