... SINOPEC, CNOOC, CNCEC, etc.Automatic Tank Welding Machine(Bottom to Top);Automatic Tank Welder(Bottom up)Configurations:- AGW for tower and ... flux core wire4All the machines are applicable to botton-to-top tank erection, hanged on shell top5First X-ray qualification rate ... training We have very mature experience in both bottom-to-top and top-to-bottom tank construction.Welcome to visit our headquarter ...