Progress in development of fabrication of small TBMs for EAST and ITER

CLAM steel is one of the RAFMs under development in China. And it is chosen as the primary candidate structural material of the LiPb blankets and DFLL-TBM developed in China. The development and test strategy of DFLL-TBM includes three stages: out-of-pile test, test in EAST and test in ITER. The fabrication techniques of small TBMs for EAST and ITER such as smelting of CLAM steel, the process of the panel for the first wall and Electron Beam Welding method are being studied in detail during recent years. The recent progress of these R&D activities is summarized.