RESEARCH ON RADIOGRAPHIC INSPECTION OF STATIC CASTING PIPE ELEMENTS FOR ETHYLENE CRACKING FURNACE
Liu Jianjie;Chu Yongjun;Chen Junhai;Lian Xiaoming(Hefei General Machinery Research Institute Co.,Ltd.,Hefei,Anhui,230031)
Petro-chemical Equipment Technology . 2019, (1): 34 -37 .  DOI: 10.3969/j.issn.1006-8805.2019.01.009