Hwashin Bolt Industry has fully localized the production of large-scale high-temperature and high-pressure bolts used to fasten split steam and gas turbine casings. These products are applied to global turbine models manufactured by General Electric, Siemens, and Mitsubishi Heavy Industries, and are reliably supplied to domestic power plants. By eliminating import dependency, we significantly reduce maintenance costs and lead times. Supplied items include THRU STUD, TAP STUD, COUPLING SET, and DOWEL PIN.

Key Role of Turbine Casing Bolts

Turbine casings are horizontally split structures joined by large horizontal bolts. Under extreme operating conditions of 550–650°C and steam pressures up to 150 bar, these bolts must simultaneously maintain airtight sealing, structural rigidity, and vibration resistance. Even a single leakage is unacceptable, making them critical safety components. The localization of turbine casing bolts strengthens technological independence in Korea’s power generation industry and enhances global competitiveness in high-temperature and high-pressure fastening solutions.