Recently, the largest domestic nano-diamond detonation equipment developed by Xi'an Aero Engine Group Tianding Nuclear Power Equipment Co., Ltd. passed the acceptance test in Xi'an. According to the technical requirements put forward by foreign experts, Xihang Ding Nuclear Power Equipment Co., Ltd. carried out the strength calculation and drawing design of the explosion mechanics for the nano-diamond detonation equipment, and was reviewed and approved by experts. The device has large diameter, complicated molding and high welding difficulty. After a number of technical breakthroughs and welding parameters tests, technicians and welding workers of West Aerospace Ding Nuclear Power Equipment Co., Ltd. have fully met the technical requirements for the quality and performance of the equipment. The successful development of this equipment has filled a gap in China.