This chapter contains sections titled:

• Introduction

• The Innovation of the Equipment and Process Technology

• Heat Treatment Equipment

• Precast Processing and Welding

• Development of Low Temperature Pressure Vessel Steel

• C-Mn Steel 16MnDR

• 0.5Ni Steel 15MnNiNbDR (13MnNi6-3)

• 0.5Ni Steel 09MnNiDR (11MnNi5-3)

• 08Ni3DR (12Ni14), X12Ni5(07Ni5DR), 06 Ni 9DR(X7Ni9)

• Conclusion