Experimental study on hollow structural component by explosive welding

•This paper relates to a study on a thin double-layers hollow structural component by using an explosive welding technology.•This thin double-layer hollow structural component is an indispensable component required for certain core equipment of thermonuclear experimental reactor.•An adjusted explosive welding technology for manufacturing an inconel625 hollow structural component was developed which cannot be made by common technology.•The result shows that a metallurgical bonding was realized by the ribs and slabs of the hollow sheet.•The shearing strength of bonding interface exceeds that of the parent metal.