江苏江阴石油分公司的2000M3丙稀球罐壁厚50mm,焊缝无损探伤一次拍片一级片超过98% 2000M3 Propylene Spherical Tank of Jiangsu Jiangyin Petroleum Subsidiary Company of SINOPEC. Wall thickness is 50mm.Over 98% of films are Class A by NDT at the first time