The body of ASP condenser is made of austenitic stainless steel. During the manufacturing process, through a series of anti-deformation measures, the overall size of the product after welding can meet the requirements of the design standard. The C-shaped tube has specification of φ48x3mm, the tube and the tube sheet are expanded with a special hydraulic tube expanding device. After expanding, the tube has a smooth internal surface without defects, the expanding area is smooth, and the pulling force of the tube meets the requirements of RCCM. Different from the traditional shell and tube heat exchanger, this product has no shell. During the manufacturing process, a special tooling shell is designed and manufactured, which is used for helium leak detection after tube and tube sheet welded.