Abstract:
The composition optimization and key manufacture process of domestic ASME CODE CASE 2328-1 steel tube were mainly introduced.Non-metallic inclusions,grain size,microstructure,conventional mechanical properties and rupture strength of the steel tubes made by domestic manufacturer and Sumitomo company are compared.The domestic ASME CODE CASE 2328-1 steel tube produced by high temperature softening treatment,large deformation of cold work,solution treatment and inner shot blasting can meet the requirements of the specification and the quality of the steel tube is very good,which can substitute the imported products.