Hwashin Bolt Industry supplies piping bolts for offshore plant systems (FPSO, F-LNG, Drillship, Jack-up Rig, Semisubmersible, Submarine, etc.) to leading domestic EPC companies, providing long-term support for high-specification projects.

Hwashin’s Piping Bolt Technology

Supplied products include Stud Bolts, Heavy Hex Bolts, Nuts, Washers, and U-Bolts using marine-grade materials such as ASTM A320 L7 and B7M, with Xylan coating available.

Proven Performance

Long-term supply of submarine propulsion piping systems and F-LNG topside piping stud bolt sets to Samsung and Hyundai demonstrates our reliability. Piping bolts are critical fastening components that directly impact offshore plant safety and performance, supported by Hwashin’s advanced Xylan coating technology.